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. Principle analysis and test results are given.
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Xiang, Jy. Non-ideal space division multiple access and its application. Frontiers Inf Technol Electronic Eng 19, 357–366 (2018). https://doi.org/10.1631/FITEE.1700827
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DOI: https://doi.org/10.1631/FITEE.1700827