Research on UCD Precoding for MIMO System

Hong He; Tao Li; Tong Yang; Lin He

doi:10.4028/www.scientific.net/AMR.459.620

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 459Research on UCD Precoding for MIMO System

Research on UCD Precoding for MIMO System

Abstract:

This article mainly describes a new technique of multiple-input multiple-output (MIMO) communication systems based on the recent communication demand. This technique, by pre-coding CSI (the channel state information) at the transmitter, is based on UCD (Uniform Channel Decomposition) algorithm for MIMO system. By Uniform Channel decomposition of channel matrix, the algorithm can decompose a MIMO downlink channel into multiple identical sub-channels. The power allocation applied to each sub channel in MIMO system is identical, and the MIMO channel’s capacity isn’t reduce when the SNR (Signal Noise Ratio) is low. The simulations show that the UCD scheme has a better performance than GMD (Geometric Mean Decomposition) scheme even without the use of error-correcting codes, and the Symbol Error Rate (SER) of UCD algorithm is lower than GMD’s at the same SNR. Consequently, MIMO system gets a better interference performance by UCD algorithm.

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Periodical:

Advanced Materials Research (Volume 459)

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620-623

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.459.620

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Online since:

January 2012

Authors:

Hong He, Tao Li, Tong Yang, Lin He

Keywords:

Geometric Mean Decomposition, MIMO, Precoding, Uniform Channel Decomposition

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