New iterative detection algorithm based on QR decomposition in MIMO-OFDM systems
Deng Fei · Application of Electronic Technique · 2009
Based on the combination of iterative QR decomposition algorithm and successive interference cancellation theory, this paper represents a new iterative detection algorithm based on QR decomposition.Firstly, this algorithm fully use the diversity provided by multi-antenna system, after QR decomposition for each time, just hold the last layer's signal.Then cancel the detected signal's interference and delete the channel matrix's relevant column.Repeat this process until all signals have been detected. The analysis shows that the complexity of the new iterative detection algorithm is ten times less complex than OSIC and two times less complex than traditional iterative detection algorithm.The simulation test shows that the new iterative detection algorithm performance is the same as traditional iterative detection algorithm performance,and better than OSIC algorithm performance.