An Improved DL-Co MP-MU Limited Feedback Scheme
Xi Zhao · Electronic Science and Technology · 2014
The theory of matched filter and the ideas of the cognitive approach are used to determine the cooperative transmission structure in order to improve the feedback ability of the existing Co MP downlink link and reduce the feedback overhead. The substitution of the interference signal noise ratio( SINR) feedback overhead solution for the CQI information reduces the amount of feedback information,and further reduces the quantization error of feedback information. Simulation shows that the improved feedback scheme further reduces the feedback overhead compared with the traditional scheme of feedback in raising accuracy.