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Title: Transmitter precoder design to improve the performance of the MUSIC algorithm
Authors: Zhang, L.
Chew, Y.H.
Wong, W.-C. 
Keywords: Angle-of-arrival estimation
Channel state information
Multipath channel
Performance bound
Issue Date: 2013
Citation: Zhang, L., Chew, Y.H., Wong, W.-C. (2013). Transmitter precoder design to improve the performance of the MUSIC algorithm. Signal Processing 93 (11) : 3202-3208. ScholarBank@NUS Repository.
Abstract: Using the MUSIC (MUltiple SIgnal Classification) algorithm to estimate the angle-of-arrival (AoA), we derive a new asymptotic error variance bound when the transmitted signal can be pre-processed. We next propose a precoder design to achieve this bound. However, such an optimal precoder requires channel state information at the transmitter (CSIT) exclusive of the receiver array which cannot be separately estimated practically. A more feasible precoder design, which leverages on the feedback CSIT estimated at the receiver, is next proposed. Using the performance of the optimal precoder which achieves the bound asymptotically as a benchmark, the practical precoder design performs close to the optimal precoder even in the high-resolution scenario. Both precoder schemes exhibit performance improvement compared with the case when no precoder is used. © 2013 Elsevier B.V.
Source Title: Signal Processing
ISSN: 01651684
DOI: 10.1016/j.sigpro.2013.05.019
Appears in Collections:Staff Publications

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