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Systems and methods for multistage signal detection in mimo transmissions and iterative detection of precoded OFDM
Systems and methods for multistage signal detection in mimo transmissions and iterative detection of precoded OFDM
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机译:用于mimo传输中的多级信号检测和预编码OFDM迭代检测的系统和方法
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摘要
Systems and methods for multi-stage signal detection in MIMO transmission including Bernoulli-Gaussian detection are provided. A multistage iterative signal decoder is provided that exploits the property that in a relatively simply decoding scheme such as mean square error (MSE) or zero-forcing (ZF) only a small portion of the total symbols are mis-detected. Therefore, an optimality test is performed on the output of a relatively low complexity decoder unit. If the symbol passes the optimality test, it is presumed to be correctly decoded. Otherwise, the symbol is sent for further processing to a relatively higher complexity decoding unit such as a sphere decoder. In this way, processing efficiency is increased, because only those symbols requiring additional processing are processed by the high complexity processing unit.
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