多元接続 OFDMA “What makes 4G better than 3.5G and 3G? - CDMA (the way of getting many signals to share frequencies by coding them) is replaced by a more efficient technology called orthogonal frequency-division multiple access (OFDMA), which makes even better use of the frequency spectrum.”
多元接続 OFDMA “What makes 4G better than 3.5G and 3G? - CDMA (the way of getting many signals to share frequencies by coding them) is replaced by a more efficient technology called orthogonal frequency-division multiple access (OFDMA), which makes even better use of the frequency spectrum.”
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