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FITEE
Front. Inform. Technol. Electron. Eng.  2018, Vol. 19 Issue (3): 357-366    DOI:
    
Non-ideal space division multiple access and its application  
Ji-ying XIANG
ZTE Corporation, Shenzhen 518054, China
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Abstract  We study the performance of space division multiple access (SDMA) under a non-ideal engineering situation. When the
SDMA channel is of high inter-layer correlation and the condition number is large, the multiple user multiple input and multiple
output user equipment (MUMIMOUE) grouping should be optimized, and in some cases further dimension-reduction should be
applied. As the channel measuring is always non-ideal, we use two methods, feedback mode and non-feedback mode, in terms of
performance and overhead. It is proposed that the non-feedback mode is preferable even for some non-reciprocal channels. Prin-
ciple analysis and test results are given.

Key words： Fifth generation (5G)      Condition number      Channel reciprocity      Feedback mode      Non-feedback mode     
Received: 11 December 2017      Published: 06 June 2019
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Ji-ying XIANG
Cite this article:

Ji-ying XIANG. Non-ideal space division multiple access and its application   . Front. Inform. Technol. Electron. Eng., 2018, 19(3): 357-366.

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http://www.zjujournals.com/xueshu/fitee/     OR     http://www.zjujournals.com/xueshu/fitee/Y2018/V19/I3/357


Non-ideal space division multiple access and its application

We study the performance of space division multiple access (SDMA) under a non-ideal engineering situation. When the
SDMA channel is of high inter-layer correlation and the condition number is large, the multiple user multiple input and multiple
output user equipment (MUMIMOUE) grouping should be optimized, and in some cases further dimension-reduction should be
applied. As the channel measuring is always non-ideal, we use two methods, feedback mode and non-feedback mode, in terms of
performance and overhead. It is proposed that the non-feedback mode is preferable even for some non-reciprocal channels. Prin-
ciple analysis and test results are given.

关键词： Fifth generation (5G),  Condition number,  Channel reciprocity,  Feedback mode,  Non-feedback mode 
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