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OFDM-MIMO PSRCPER STREAM RATE CONTROL PSRC FOR IMPROVING SYSTEM EFFICIENCY IN OFDM-MIMO COMMUNICATION SYSTEMS

机译:改善OFDM-MIMO通信系统效率的OFDM-MIMO PSRCPER流速率控制PSRC

摘要

The transmitter segments the user data stream into a plurality of substreams. The transmitter then adaptively selects the modulation scheme and coding rate for each sub-stream of the plurality of sub-streams based on the current channel conditions. Next, the plurality of subcarriers are modulated and encoded using the sub-stream data according to the selected modulation scheme and coding rate. The modulated subcarriers are then each assigned to one or more transmit transmit antennas. Before transmission, the transmit power for each subcarrier of a plurality of subcarriers is adjusted based on the current channel conditions. Adaptive modulation and coding functions, subcarrier allocation functions and power control functions are jointly controlled to optimize throughput, signal quality and system efficiency.
机译:发送器将用户数据流划分为多个子流。然后,发射器基于当前信道条件为多个子流中的每个子流自适应地选择调制方案和编码率。接下来,根据选择的调制方案和编码率,使用子流数据对多个子载波进行调制和编码。然后将已调制的子载波分别分配给一个或多个发射发射天线。在发送之前,基于当前信道条件来调整多个子载波中的每个子载波的发送功率。联合控制自适应调制和编码功能,子载波分配功能和功率控制功能,以优化吞吐量,信号质量和系统效率。

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