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PER STREAM RATE CONTROL (PSRC) FOR IMPROVING SYSTEM EFFICIENCY IN OFDM-MIMO COMMUNICATION SYSTEMS
PER STREAM RATE CONTROL (PSRC) FOR IMPROVING SYSTEM EFFICIENCY IN OFDM-MIMO COMMUNICATION SYSTEMS
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机译:用于提高OFDM-MIMO通信系统效率的每流速率控制(PSRC)
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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.
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