Channel Scaling-Based Transmit Antenna Selection for 2-Dimensional Rake Combining Spatial Multiplexing UWB MIMO Systems

Sangchoon KIM  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E96-A   No.10   pp.2061-2065
Publication Date: 2013/10/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E96.A.2061
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Communication Theory and Signals
ultra-wideband (UWB),  multiple input multiple output (MIMO),  channel scaling,  antenna selection,  

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In this letter, a fast transmit antenna selection algorithm is proposed for the spatial-temporal combining-based spatial multiplexing ultra-wideband systems on a log-normal multipath fading channel. The presented suboptimum algorithm selects the transmit antennas associated with the largest signal to noise ratio value computed by one QR decomposition operation of the full channel matrix spatially and temporally combined. It performs the iterative channel scaling operation about the channel matrix and singular value decomposition about the channel scaled matrix. It is shown that the proposed antenna selection algorithm leads to a substantial improvement in the error performance while keeping low-complexity, and obtains almost the same error performance as the exhaustive search-based optimal antenna selection algorithm.