Design Tradeoffs in OFDMA Uplink Traffic Channels
نویسندگان
چکیده
This paper addresses the tradeoff issues in OFDMA uplink data channel design. For fixed and portable applications where the propagation channels are near static, we show that maximum throughput can be achieved through intelligent channel allocation when uplink channels are configured with minimum frequency diversity. The total uplink throughput under different configurations is presented. For mobile services that require sufficient frequency diversity, we evaluate the mutual information that quantifies the frequency diversity gain for rapid fading channels. Using the results presented, designers of OFDMA system can determine the optimum traffic channel configuration based on the types of services supported by the network.
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