Analysis of SINR for Unitary and Non-Unitary Precoded MIMO Systems

Xin Lu; Xiong Xu; Jian Hu Wang

doi:10.4028/www.scientific.net/KEM.460-461.414

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 460-461Analysis of SINR for Unitary and Non-Unitary...

Analysis of SINR for Unitary and Non-Unitary Precoded MIMO Systems

Abstract:

Pre-coding type can be grouped into two approaches, unitary or non-unitary for 3GPP Long Term Evolution(LTE). Output SINR of unitary Pre-coding for MU-MIMO is investigated in this paper. A more simple method of calculation for SINR is presented, which Leads to the computational complexity down to 18% compared with original method, while calculating MIMO Pre-coding system with 4 matrices (i.e. 8 vectors). In addition, we also analyzed the loss of SINR when using unitary or non-unitary Pre-coding. Corresponding simulations show that output SINR of non-unitary pre-coding system is inferior to the unitary pre-coding case and such losses can been described using statistical linear approximation.

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Key Engineering Materials (Volumes 460-461)

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414-419

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.460-461.414

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January 2011

Authors:

Xin Lu, Xiong Xu, Jian Hu Wang

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MMSE, Pre-Coding, SINR

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