Spectral Efficiency Design Elements Spectral/Temporal elements multiple access method: TDMA, FDMA, OFDMA… optimize efficiency based on traffic types modulation, channel coding, equalization: QPSK, QAM, OFDM, … optimize efficiency based on link quality Spatial elements (all to minimize interference) cellularization mitigate co-channel interference by separating co-channel users sectorization mitigate co-channel interference by more selective downlink patterns and increased uplink sensitivity power control use minimum power necessary for successful communications
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