{"id":4964,"date":"2025-09-20T11:12:00","date_gmt":"2025-09-20T11:12:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/what-is-code-division-multiple-access-and-how-does-it-work\/"},"modified":"2026-06-22T06:53:06","modified_gmt":"2026-06-22T06:53:06","slug":"what-is-code-division-multiple-access-and-how-does-it-work","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-code-division-multiple-access-and-how-does-it-work","title":{"rendered":"C\u00f4ng ngh\u1ec7 truy c\u1eadp \u0111a \u0111i\u1ec3m ph\u00e2n chia theo m\u00e3 (CDMA) l\u00e0 g\u00ec v\u00e0 ho\u1ea1t \u0111\u1ed9ng ra sao"},"content":{"rendered":"<figure class=\"wp-block-image aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1312\" height=\"736\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9f79a1560b1c4f55b0730162f11ae082.webp\" alt=\"Code Division Multiple Access\" class=\"wp-image-4962\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9f79a1560b1c4f55b0730162f11ae082.webp 1312w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9f79a1560b1c4f55b0730162f11ae082-300x168.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9f79a1560b1c4f55b0730162f11ae082-1024x574.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9f79a1560b1c4f55b0730162f11ae082-768x431.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/9f79a1560b1c4f55b0730162f11ae082-18x10.webp 18w\" sizes=\"(max-width: 1312px) 100vw, 1312px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1eebng t\u1ef1 h\u1ecfi l\u00e0m th\u1ebf n\u00e0o nhi\u1ec1u ng\u01b0\u1eddi c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n cu\u1ed9c g\u1ecdi \u0111i\u1ec7n tho\u1ea1i tr\u00ean c\u00f9ng m\u1ed9t t\u1ea7n s\u1ed1 m\u00e0 kh\u00f4ng g\u00e2y nhi\u1ec5u l\u1eabn nhau? C\u00e2u tr\u1ea3 l\u1eddi, v\u1ed1n \u0111\u00e3 l\u00e0m n\u1ec1n t\u1ea3ng cho m\u1ed9t th\u1ebf h\u1ec7 m\u1ea1ng di \u0111\u1ed9ng, n\u1eb1m \u1edf m\u1ed9t c\u00f4ng ngh\u1ec7 th\u00f4ng minh mang t\u00ean <strong>\u0110a truy c\u1eadp ph\u00e2n chia theo m\u00e3 (CDMA)<\/strong>. \u0110\u00e2y th\u1ef1c s\u1ef1 l\u00e0 m\u1ed9t cu\u1ed9c c\u00e1ch m\u1ea1ng, v\u01b0\u1ee3t qua nh\u1eefng h\u1ea1n ch\u1ebf c\u1ee7a c\u00e1c ti\u1ec1n th\u00e2n c\u1ee7a n\u00f3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong b\u00e0i ph\u00e2n t\u00edch chuy\u00ean s\u00e2u n\u00e0y, ch\u00fang ta s\u1ebd l\u00e0m r\u00f5 CDMA l\u00e0 g\u00ec, c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00f3 v\u00e0 l\u00fd do v\u00ec sao vi\u1ec7c hi\u1ec3u v\u1ec1 CDMA v\u1eabn c\u00f2n r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c chuy\u00ean gia m\u1ea1ng ng\u00e0y nay. Ch\u00fang ta c\u0169ng s\u1ebd kh\u00e1m ph\u00e1 m\u1ed1i li\u00ean h\u1ec7 c\u1ee7a n\u00f3 v\u1edbi c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng hi\u1ec7n \u0111\u1ea1i, bao g\u1ed3m <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>b\u1ed9 thu ph\u00e1t quang<\/strong><\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 \u0110a truy c\u1eadp ph\u00e2n chia theo m\u00e3 (CDMA) l\u00e0 g\u00ec? Kh\u00e1i ni\u1ec7m c\u1ed1t l\u00f5i<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u00e1c v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p truy\u1ec1n th\u1ed1ng chia ng\u01b0\u1eddi d\u00f9ng theo t\u1ea7n s\u1ed1 (FDMA) ho\u1eb7c theo th\u1eddi gian (TDMA), CDMA l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt \u201cph\u1ed5 m\u1edf r\u1ed9ng\u201d. N\u00f3 cho ph\u00e9p t\u1ea5t c\u1ea3 ng\u01b0\u1eddi d\u00f9ng truy\u1ec1n d\u1eef li\u1ec7u <strong>\u0111\u1ed3ng th\u1eddi tr\u00ean to\u00e0n b\u1ed9 d\u1ea3i t\u1ea7n s\u1ed1 kh\u1ea3 d\u1ee5ng<\/strong>. \u0110i\u1ec1u k\u1ef3 di\u1ec7u kh\u00f4ng n\u1eb1m \u1edf vi\u1ec7c chia chi\u1ebfc b\u00e1nh th\u00e0nh t\u1eebng mi\u1ebfng, m\u00e0 \u1edf vi\u1ec7c c\u1ea5p cho m\u1ed7i ng\u01b0\u1eddi m\u1ed9t \u201cc\u00f4ng th\u1ee9c\u201d (m\u00e3) ri\u00eang bi\u1ec7t \u0111\u1ec3 c\u00f9ng s\u1eed d\u1ee5ng to\u00e0n b\u1ed9 chi\u1ebfc b\u00e1nh m\u1ed9t c\u00e1ch \u0111\u1ed3ng th\u1eddi m\u00e0 kh\u00f4ng g\u00e2y nh\u1ea7m l\u1eabn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng nh\u01b0 m\u1ed9t b\u1eefa ti\u1ec7c \u0111\u00f4ng \u0111\u00fac:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/frequency-division-multiple-access-clear-communication-benefits\/\"><strong>FDMA<\/strong><\/a> gi\u1ed1ng nh\u01b0 \u0111\u1eb7t m\u1ed7i cu\u1ed9c tr\u00f2 chuy\u1ec7n v\u00e0o m\u1ed9t ph\u00f2ng ri\u00eang bi\u1ec7t.<\/p><\/li><li><p style=\"margin: 0px;\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/time-division-multiple-access-in-wireless-communication-explained\/\"><strong>TDMA<\/strong><\/a> gi\u1ed1ng nh\u01b0 m\u1ed7i nh\u00f3m l\u1ea7n l\u01b0\u1ee3t n\u00f3i chuy\u1ec7n trong c\u00f9ng m\u1ed9t ph\u00f2ng.<\/p><\/li><li><p style=\"margin: 0px;\"><a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/what-is-code-division-multiple-access-and-how-does-it-work\/\"><strong>CDMA<\/strong><\/a> gi\u1ed1ng nh\u01b0 m\u1ed7i c\u1eb7p \u0111\u00f4i n\u00f3i chuy\u1ec7n b\u1eb1ng m\u1ed9t ng\u00f4n ng\u1eef kh\u00e1c nhau \u0111\u1ed3ng th\u1eddi trong c\u00f9ng m\u1ed9t ph\u00f2ng. D\u00f9 c\u0103n ph\u00f2ng \u1ed3n \u00e0o, b\u1ea1n ch\u1ec9 hi\u1ec3u \u0111\u01b0\u1ee3c ng\u01b0\u1eddi \u0111ang n\u00f3i b\u1eb1ng ng\u00f4n ng\u1eef c\u1ee7a b\u1ea1n.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 CDMA ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o? S\u1ee9c m\u1ea1nh c\u1ee7a c\u00e1c m\u00e3<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ee9c n\u0103ng c\u1ee7a CDMA d\u1ef1a tr\u00ean hai nguy\u00ean l\u00fd c\u01a1 b\u1ea3n:<\/p>\n\n\n\n<ol class=\"wp-block-list\" >\n<li><p style=\"margin: 0px;\"><strong>M\u1edf r\u1ed9ng ph\u1ed5:<\/strong> M\u1ed7i bit d\u1eef li\u1ec7u (gi\u00e1 tr\u1ecb 1 ho\u1eb7c 0) t\u1eeb \u0111i\u1ec7n tho\u1ea1i c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c nh\u00e2n v\u1edbi m\u1ed9t d\u00e3y m\u00e3 gi\u1ea3 ng\u1eabu nhi\u00ean t\u1ed1c \u0111\u1ed9 cao v\u00e0 \u0111\u1ed9c nh\u1ea5t. Qu\u00e1 tr\u00ecnh n\u00e0y \u201cm\u1edf r\u1ed9ng\u201d t\u00edn hi\u1ec7u b\u0103ng h\u1eb9p c\u1ee7a b\u1ea1n th\u00e0nh m\u1ed9t t\u00edn hi\u1ec7u c\u00f3 \u0111\u1ed9 r\u1ed9ng b\u0103ng t\u1ea7n l\u1edbn h\u01a1n nhi\u1ec1u. \u0110\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 ai kh\u00f4ng c\u00f3 m\u00e3 ch\u00ednh x\u00e1c, t\u00edn hi\u1ec7u truy\u1ec1n \u0111i n\u00e0y tr\u00f4ng gi\u1ed1ng nh\u01b0 ti\u1ebfng \u1ed3n ng\u1eabu nhi\u00ean c\u00f3 c\u00f4ng su\u1ea5t th\u1ea5p.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Gi\u1ea3i m\u1edf r\u1ed9ng ph\u1ed5:<\/strong> Tr\u1ea1m thu (v\u00ed d\u1ee5: tr\u1ea1m g\u1ed1c t\u1ebf b\u00e0o) bi\u1ebft m\u00e3 \u0111\u1ed9c nh\u1ea5t \u0111\u01b0\u1ee3c g\u00e1n cho \u0111i\u1ec7n tho\u1ea1i c\u1ee7a b\u1ea1n. Tr\u1ea1m n\u00e0y \u00e1p d\u1ee5ng c\u00f9ng m\u00e3 \u0111\u00f3 l\u00ean t\u00edn hi\u1ec7u nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u1ea7y nhi\u1ec5u. Vi\u1ec7c n\u00e0y t\u1ea1o ra t\u01b0\u01a1ng quan v\u00e0 \u201cgi\u1ea3i m\u1edf r\u1ed9ng ph\u1ed5\u201d, kh\u00f4i ph\u1ee5c l\u1ea1i t\u00edn hi\u1ec7u ban \u0111\u1ea7u c\u1ee7a b\u1ea1n, t\u1eeb \u0111\u00f3 t\u00e1ch hi\u1ec7u qu\u1ea3 t\u00edn hi\u1ec7u \u0111\u00f3 ra kh\u1ecfi ti\u1ebfng \u1ed3n n\u1ec1n do t\u1ea5t c\u1ea3 c\u00e1c t\u00edn hi\u1ec7u truy\u1ec1n kh\u00e1c g\u00e2y ra.<\/p><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c m\u00e3 \u0111\u1ed9c nh\u1ea5t n\u00e0y mang l\u1ea1i t\u00ednh b\u1ea3o m\u1eadt, ri\u00eang t\u01b0 v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng nhi\u1ec5u v\u1ed1n c\u00f3.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img decoding=\"async\" width=\"1312\" height=\"568\" src=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ee7cd391e81c4ea991ef0c0cc2423490.webp\" alt=\"Code Division Multiple Access\" class=\"wp-image-4963\" srcset=\"https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ee7cd391e81c4ea991ef0c0cc2423490.webp 1312w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ee7cd391e81c4ea991ef0c0cc2423490-300x130.webp 300w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ee7cd391e81c4ea991ef0c0cc2423490-1024x443.webp 1024w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ee7cd391e81c4ea991ef0c0cc2423490-768x332.webp 768w, https:\/\/resourceslp.szlogic.cn\/wp-content\/uploads\/2026\/05\/ee7cd391e81c4ea991ef0c0cc2423490-18x8.webp 18w\" sizes=\"(max-width: 1312px) 100vw, 1312px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 So s\u00e1nh nhanh CDMA v\u1edbi c\u00e1c c\u00f4ng ngh\u1ec7 \u0111a truy c\u1eadp kh\u00e1c<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea3ng sau \u0111\u00e2y n\u00eau b\u1eadt c\u00e1ch CDMA kh\u00e1c bi\u1ec7t so v\u1edbi c\u00e1c c\u00f4ng ngh\u1ec7 n\u1ec1n t\u1ea3ng kh\u00e1c.<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<colgroup><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><col style=\"min-width: 25px;\"\/><\/colgroup><tbody><tr><th colspan=\"1\" rowspan=\"1\"><p>\u0110\u1eb7c t\u00ednh<\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>FDMA (Ph\u00e2n chia theo T\u1ea7n s\u1ed1)<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>TDMA (Ph\u00e2n chia theo Th\u1eddi gian)<\/strong><\/p><\/th><th colspan=\"1\" rowspan=\"1\"><p><strong>CDMA (Ph\u00e2n chia theo M\u00e3)<\/strong><\/p><\/th><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Kh\u00e1i ni\u1ec7m c\u1ed1t l\u00f5i<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Chia d\u1ea3i t\u1ea7n s\u1ed1 th\u00e0nh c\u00e1c k\u00eanh.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Chia th\u1eddi gian th\u00e0nh c\u00e1c khe tr\u00ean m\u1ed9t t\u1ea7n s\u1ed1.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>S\u1eed d\u1ee5ng c\u00e1c m\u00e3 \u0111\u1ed9c nh\u1ea5t tr\u00ean c\u00f9ng m\u1ed9t t\u1ea7n s\u1ed1.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Ph\u00e2n t\u00e1ch ng\u01b0\u1eddi d\u00f9ng<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Theo t\u1ea7n s\u1ed1<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Theo th\u1eddi gian<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Theo m\u00e3<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Nhi\u1ec5u t\u00edn hi\u1ec7u<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>D\u1ec5 b\u1ecb nhi\u1ec5u k\u00eanh \u0111\u1ed3ng t\u1ea7n.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>D\u1ec5 b\u1ecb nhi\u1ec5u \u0111a \u0111\u01b0\u1eddng.<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Ch\u1ecbu nhi\u1ec5u t\u1ed1t; \u0111\u01b0\u1ee3c x\u1eed l\u00fd nh\u01b0 ti\u1ebfng \u1ed3n.<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>Dung l\u01b0\u1ee3ng<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u1ed1 \u0111\u1ecbnh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>C\u1ed1 \u0111\u1ecbnh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>Gi\u1edbi h\u1ea1n dung l\u01b0\u1ee3ng m\u1ec1m<\/strong> (hi\u1ec7u n\u0103ng suy gi\u1ea3m nh\u1eb9 nh\u00e0ng khi s\u1ed1 ng\u01b0\u1eddi d\u00f9ng t\u0103ng l\u00ean)<\/p><\/td><\/tr><tr><td colspan=\"1\" rowspan=\"1\"><p><strong>B\u1ea3o m\u1eadt<\/strong><\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Th\u1ea5p<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p>Trung b\u00ecnh<\/p><\/td><td colspan=\"1\" rowspan=\"1\"><p><strong>B\u1ea3n ch\u1ea5t cao<\/strong> (t\u00edn hi\u1ec7u xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng ti\u1ebfng \u1ed3n)<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 Di s\u1ea3n v\u00e0 \u1ee9ng d\u1ee5ng hi\u1ec7n \u0111\u1ea1i c\u1ee7a CDMA<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>CDMA<\/strong> \u0111\u00e3 l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a cu\u1ed9c c\u00e1ch m\u1ea1ng 3G (theo ti\u00eau chu\u1ea9n UMTS s\u1eed d\u1ee5ng W-CDMA). M\u1eb7c d\u00f9 4G LTE v\u00e0 <strong>m\u1ea1ng 5G<\/strong> ch\u1ee7 y\u1ebfu \u0111\u00e3 chuy\u1ec3n sang k\u1ef9 thu\u1eadt \u0111a truy c\u1eadp ph\u00e2n chia theo t\u1ea7n s\u1ed1 tr\u1ef1c giao <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/what-is-ofdma-role-modern-connectivity-wifi-5g-networks\/\"><strong>(OFDMA)<br><\/strong><\/a> nh\u1edd hi\u1ec7u qu\u1ea3 cao khi x\u1eed l\u00fd d\u1eef li\u1ec7u, nh\u01b0ng c\u00e1c nguy\u00ean l\u00fd v\u1ec1 ph\u1ed5 m\u1edf r\u1ed9ng v\u00e0 truy c\u1eadp d\u1ef1a tr\u00ean m\u00e3 v\u1eabn c\u00f2n t\u1ed3n t\u1ea1i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Di s\u1ea3n c\u1ee7a n\u00f3 r\u1ea5t s\u00e2u r\u1ed9ng trong c\u00e1c l\u0129nh v\u1ef1c sau:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><p style=\"margin: 0px;\"><strong>GPS:<\/strong> H\u1ec7 th\u1ed1ng GPS l\u00e0 m\u1ed9t trong nh\u1eefng \u1ee9ng d\u1ee5ng CDMA ph\u1ed5 bi\u1ebfn v\u00e0 th\u00e0nh c\u00f4ng nh\u1ea5t.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>Truy\u1ec1n th\u00f4ng qu\u00e2n s\u1ef1:<\/strong> \u0110\u1eb7c t\u00ednh ch\u1ed1ng nhi\u1ec5u v\u00e0 b\u1ea3o m\u1eadt c\u1ee7a n\u00f3 khi\u1ebfn CDMA tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng qu\u1ed1c ph\u00f2ng.<\/p><\/li><li><p style=\"margin: 0px;\"><strong>N\u1ec1n t\u1ea3ng cho 3G:<\/strong> CDMA \u0111\u00e3 gi\u00fap h\u00e0ng tri\u1ec7u ng\u01b0\u1eddi tr\u1ea3i nghi\u1ec7m internet di \u0111\u1ed9ng th\u1ef1c s\u1ef1 \u0111\u1ea7u ti\u00ean.<\/p><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 CDMA v\u00e0 k\u1ebft n\u1ed1i quang h\u1ecdc: B\u1ed9 thu ph\u00e1t quang \u0111\u00f3ng vai tr\u00f2 g\u00ec?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea1n c\u00f3 th\u1ec3 th\u1eafc m\u1eafc: \u201cM\u1ed9t c\u00f4ng ngh\u1ec7 v\u00f4 tuy\u1ebfn th\u00ec li\u00ean quan g\u00ec \u0111\u1ebfn <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>b\u1ed9 thu ph\u00e1t quang<\/strong><\/a>?\u201d M\u1ed1i li\u00ean h\u1ec7 n\u1eb1m \u1edf ph\u1ea7n l\u00f5i m\u1ea1ng. Trong khi CDMA x\u1eed l\u00fd \u201c\u0111o\u1ea1n cu\u1ed1i c\u00f9ng\u201d kh\u00f4ng d\u00e2y, l\u01b0u l\u01b0\u1ee3ng d\u1eef li\u1ec7u kh\u1ed5ng l\u1ed3 t\u1eeb h\u00e0ng ng\u00e0n ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i \u0111\u01b0\u1ee3c t\u1eadp h\u1ee3p v\u00e0 \u0111\u1ecbnh tuy\u1ebfn qua m\u1ea1ng l\u00f5i. Vi\u1ec7c n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n th\u00f4ng qua <a target=\"_blank\" rel=\"\" href=\"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/fiber-optic-cable-what-it-is-and-how-it-works-explained\/\"><strong>c\u00e1p quang<\/strong><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c tr\u1ea1m g\u1ed1c t\u1ebf b\u00e0o \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i b\u1eb1ng <strong>c\u00f4ng ngh\u1ec7 s\u1ee3i quang<\/strong> \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u dung l\u01b0\u1ee3ng truy\u1ec1n t\u1ea3i ng\u01b0\u1ee3c (backhaul) kh\u1ed5ng l\u1ed3. <strong>b\u1ed9 thu ph\u00e1t quang<\/strong> l\u00e0 th\u00e0nh ph\u1ea7n then ch\u1ed1t chuy\u1ec3n \u0111\u1ed5i t\u00edn hi\u1ec7u RF \u0111i\u1ec7n (bao g\u1ed3m c\u1ea3 t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c m\u00e3 h\u00f3a b\u1eb1ng CDMA) th\u00e0nh xung \u00e1nh s\u00e1ng \u0111\u1ec3 truy\u1ec1n qua c\u00e1p quang. M\u1ed9t b\u1ed9 thu ph\u00e1t ch\u1ea5t l\u01b0\u1ee3ng cao v\u00e0 \u0111\u00e1ng tin c\u1eady \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u CDMA \u0111\u00e3 \u0111\u01b0\u1ee3c gi\u1ea3i m\u00e3 c\u1ea9n th\u1eadn \u0111\u01b0\u1ee3c duy tr\u00ec xuy\u00ean su\u1ed1t h\u00e0nh tr\u00ecnh c\u1ee7a n\u00f3 tr\u00ean m\u1ea1ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ed1i v\u1edbi c\u00e1c m\u1ea1ng hi\u1ec7n \u0111\u1ea1i t\u00e1i s\u1eed d\u1ee5ng c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng CDMA c\u0169 ho\u1eb7c y\u00eau c\u1ea7u \u0111\u01b0\u1eddng truy\u1ec1n ng\u01b0\u1ee3c b\u1ec1n b\u1ec9 cho c\u00e1c h\u1ec7 th\u1ed1ng k\u1ebf th\u1eeba, vi\u1ec7c l\u1ef1a ch\u1ecdn \u0111\u00fang b\u1ed9 thu ph\u00e1t l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t. \u0110\u00e2y ch\u00ednh l\u00e0 l\u0129nh v\u1ef1c th\u1ebf m\u1ea1nh c\u1ee7a th\u01b0\u01a1ng hi\u1ec7u <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.link-pp.com\/\"><strong>LINK-PP<\/strong><\/a> , cung c\u1ea5p c\u00e1c linh ki\u1ec7n t\u01b0\u01a1ng th\u00edch cao v\u00e0 \u1ed5n \u0111\u1ecbnh. V\u00ed d\u1ee5, module <strong>LINK-PP <\/strong><a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/products\/475415.htm\"><strong>10G-SR<\/strong><\/a> SFP+ l\u00e0 l\u1ef1a ch\u1ecdn ho\u00e0n h\u1ea3o \u0111\u1ec3 n\u00e2ng c\u1ea5p c\u00e1c li\u00ean k\u1ebft truy\u1ec1n t\u1ea3i ng\u01b0\u1ee3c t\u1ea1i tr\u1ea1m g\u1ed1c l\u00ean t\u1ed1c \u0111\u1ed9 10G, \u0111\u1ea3m b\u1ea3o vi\u1ec7c v\u1eadn chuy\u1ec3n li\u1ec1n m\u1ea1ch c\u00e1c c\u00f4ng ngh\u1ec7 v\u00f4 tuy\u1ebfn \u0111a d\u1ea1ng \u2014 bao g\u1ed3m c\u1ea3 l\u01b0u l\u01b0\u1ee3ng CDMA k\u1ebf th\u1eeba \u2014 v\u1edbi \u0111\u1ed9 tr\u1ec5 th\u1ea5p v\u00e0 \u0111\u1ed9 tin c\u1eady cao.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi l\u1eadp k\u1ebf ho\u1ea1ch cho ph\u1ea7n l\u00f5i quang h\u1ecdc c\u1ee7a m\u1ea1ng, vi\u1ec7c c\u00e2n nh\u1eafc <strong>kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi thi\u1ebft b\u1ecb v\u00f4 tuy\u1ebfn k\u1ebf th\u1eeba<\/strong> l\u00e0 m\u1ed9t t\u1eeb kh\u00f3a d\u00e0i h\u1ea1n quan tr\u1ecdng trong chi\u1ebfn l\u01b0\u1ee3c t\u00ecm ki\u1ebfm c\u1ee7a b\u1ea1n, v\u00e0 m\u1ed9t chuy\u00ean gia nh\u01b0 LINK-PP c\u00f3 th\u1ec3 cung c\u1ea5p ch\u00ednh x\u00e1c \u0111i\u1ec1u \u0111\u00f3.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u27a4 K\u1ebft lu\u1eadn: T\u00e1c \u0111\u1ed9ng l\u00e2u d\u00e0i<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>CDMA<\/strong> c\u00f3 th\u1ec3 kh\u00f4ng c\u00f2n l\u00e0 ng\u00f4i sao c\u1ee7a c\u00e1c th\u1ebf h\u1ec7 di \u0111\u1ed9ng m\u1edbi nh\u1ea5t, nh\u01b0ng vi\u1ec7c \u1ee9ng d\u1ee5ng s\u00e1ng t\u1ea1o c\u00f4ng ngh\u1ec7 ph\u1ed5 r\u1ed9ng c\u1ee7a n\u00f3 \u0111\u00e3 m\u1edf \u0111\u01b0\u1eddng cho th\u1ebf gi\u1edbi k\u1ebft n\u1ed1i m\u00e0 ch\u00fang ta \u0111ang s\u1ed1ng ng\u00e0y nay. C\u00e1c kh\u00e1i ni\u1ec7m v\u1ec1 m\u00e3 h\u00f3a v\u00e0 truy c\u1eadp \u0111\u1ed3ng th\u1eddi c\u1ee7a n\u00f3 v\u1eabn c\u00f2n \u1ea3nh h\u01b0\u1edfng s\u00e2u r\u1ed9ng. Vi\u1ec7c hi\u1ec3u r\u00f5 nh\u1eefng n\u1ec1n t\u1ea3ng c\u01a1 b\u1ea3n n\u00e0y l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu \u0111\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 chuy\u00ean gia m\u1ea1ng n\u00e0o, \u0111\u1eb7c bi\u1ec7t khi t\u00edch h\u1ee3p c\u00e1c h\u1ec7 th\u1ed1ng hi\u1ec7n \u0111\u1ea1i <strong>c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng 5G<\/strong> v\u1edbi m\u1ed9t l\u1edbp v\u1eadn chuy\u1ec3n quang h\u1ecdc m\u1ea1nh m\u1ebd.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>S\u1eb5n s\u00e0ng n\u00e2ng c\u1ea5p c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng c\u1ee7a b\u1ea1n \u0111\u1ec3 \u0111\u00e1p \u1ee9ng t\u01b0\u01a1ng lai?<\/strong> Kh\u00e1m ph\u00e1 lo\u1ea1t s\u1ea3n ph\u1ea9m hi\u1ec7u su\u1ea5t cao c\u1ee7a ch\u00fang t\u00f4i <a target=\"_blank\" rel=\"\" href=\"https:\/\/www.l-p.com\/store-25432-optics-transceivers-sfp-modules.htm\"><strong>transceiver quang h\u1ecdc LINK-PP<\/strong><\/a> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf nh\u1eb1m \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u1ea3 c\u00e1c h\u1ec7 th\u1ed1ng ti\u00ean ti\u1ebfn nh\u1ea5t l\u1eabn c\u00e1c h\u1ec7 th\u1ed1ng c\u0169. <strong>H\u00e3y xem ngay c\u00e1c s\u1ea3n ph\u1ea9m c\u1ee7a ch\u00fang t\u00f4i h\u00f4m nay v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00edn hi\u1ec7u c\u1ee7a b\u1ea1n \u0111\u01b0\u1ee3c truy\u1ec1n t\u1ea3i ho\u00e0n h\u1ea3o!<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" ><strong>\u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n c\u00e1 nh\u00e2n h\u00f3a v\u00e0 kh\u00e1m ph\u00e1 s\u1ea3n ph\u1ea9m c\u1ee7a ch\u00fang t\u00f4i<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" >\u0110i\u1ec1u g\u00ec l\u00e0m cho CDMA kh\u00e1c bi\u1ec7t so v\u1edbi c\u00e1c c\u00f4ng ngh\u1ec7 kh\u00f4ng d\u00e2y kh\u00e1c?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">CDMA c\u1ea5p cho m\u1ed7i ng\u01b0\u1eddi m\u1ed9t m\u00e3 \u0111\u1eb7c bi\u1ec7t. M\u00e3 n\u00e0y cho ph\u00e9p nhi\u1ec1u ng\u01b0\u1eddi s\u1eed d\u1ee5ng c\u00f9ng m\u1ed9t t\u1ea7n s\u1ed1. Cu\u1ed9c g\u1ecdi c\u1ee7a b\u1ea1n lu\u00f4n an to\u00e0n v\u00e0 r\u00f5 r\u00e0ng.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>M\u1eb9o: CDMA kh\u00f4ng chia th\u1eddi gian nh\u01b0 GSM hay TDMA.<\/p><\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\" >B\u1ea1n s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c nh\u1eefng l\u1ee3i \u00edch g\u00ec t\u1eeb CDMA?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">CDMA mang l\u1ea1i cho b\u1ea1n ch\u1ea5t l\u01b0\u1ee3ng cu\u1ed9c g\u1ecdi r\u00f5 n\u00e9t h\u01a1n v\u00e0 m\u1ee9c \u0111\u1ed9 b\u1ea3o m\u1eadt cao h\u01a1n. Nhi\u1ec1u ng\u01b0\u1eddi h\u01a1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u1ea1ng c\u00f9ng l\u00fac. B\u1ea1n s\u1ebd kh\u00f4ng b\u1ecb m\u1ea5t cu\u1ed9c g\u1ecdi, ngay c\u1ea3 khi m\u1ea1ng \u0111ang qu\u00e1 t\u1ea3i.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" >Nh\u1eefng thi\u1ebft b\u1ecb n\u00e0o s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 CDMA?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Nhi\u1ec1u \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng s\u1eed d\u1ee5ng CDMA. M\u1ed9t s\u1ed1 m\u1ea1ng 3G v\u00e0 5G c\u0169ng s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 n\u00e0y. C\u00e1c th\u1ebb d\u1eef li\u1ec7u kh\u00f4ng d\u00e2y v\u00e0 d\u1ecbch v\u1ee5 kh\u1ea9n c\u1ea5p c\u0169ng \u00e1p d\u1ee5ng CDMA \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o li\u00ean l\u1ea1c hi\u1ec7u qu\u1ea3.<\/p>","protected":false},"excerpt":{"rendered":"<p>C\u00f4ng ngh\u1ec7 truy c\u1eadp \u0111a \u0111i\u1ec3m ph\u00e2n chia theo m\u00e3 cho ph\u00e9p nhi\u1ec1u ng\u01b0\u1eddi d\u00f9ng chia s\u1ebb c\u00f9ng m\u1ed9t d\u1ea3i t\u1ea7n s\u1ed1 b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c m\u00e3 ri\u00eang bi\u1ec7t, \u0111\u1ea3m b\u1ea3o truy\u1ec1n th\u00f4ng kh\u00f4ng d\u00e2y an to\u00e0n v\u00e0 r\u00f5 r\u00e0ng.<\/p>","protected":false},"author":1,"featured_media":4962,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[26],"class_list":["post-4964","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-center","tag-optics-transceivers"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4964","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/comments?post=4964"}],"version-history":[{"count":4,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4964\/revisions"}],"predecessor-version":[{"id":11095,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/posts\/4964\/revisions\/11095"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media\/4962"}],"wp:attachment":[{"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/media?parent=4964"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/categories?post=4964"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resourceslp.szlogic.cn\/vi\/wp-json\/wp\/v2\/tags?post=4964"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}