Title :
Evaluation of PMI Feedback Schemes for MU-MIMO Pairing
Author :
Du, Yinggang ; Tong, Jianfei ; Zhang, Jing ; Liu, Sheng
Author_Institution :
Huawei Techonlogy Co. Ltd., Shenzhen, China
Abstract :
The status of codebook based MU MIMO feedback schemes in different wireless standards are briefly overviewed. Based on the Normal Feedback Scheme to feedback the preferred Precoding Matrix Index (PMI), a Best Companion Pairing (BCP) scheme and a Best Companion Cluster (BCC) scheme are introduced to make more efficient pairing. Besides the preferred PMI, UE need to feedback more PMIs for the BCP scheme or a cluster index for the BCC scheme to minimize the intracell or intercell interference. System level simulation results show that the BCC scheme can make a reasonable tradeoff between feedback overhead and throughput.
Keywords :
MIMO communication; cellular radio; precoding; radiofrequency interference; BCC scheme; BCP scheme; MU-MIMO pairing; PMI feedback schemes; best companion cluster; best companion pairing; intercell interference minimization; multiuser multiple input multiple output system; precoding matrix index; Clustering methods; Feedback; Interference; MIMO; Throughput; Best companion cluster; MU MIMO; PMI; feedback; pair;
Journal_Title :
Systems Journal, IEEE
DOI :
10.1109/JSYST.2010.2082111
