WCN U5.pptx
The document discusses multiple access schemes used to allow multiple users to share limited wireless spectrum or communication channels simultaneously. It describes several schemes including FDMA, TDMA, CDMA, OFDMA, and SDMA. FDMA divides the channel into frequency bands and assigns each user an individual band. TDMA divides the channel into time slots and assigns each user slots. CDMA spreads each user's signal over the entire channel using unique codes. OFDMA and SDMA combine these techniques with OFDM and spatial separation of users. - Download as a PPTX, PDF or view online for free
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