Barik, S. ; Mohammed, Saif K. ; Chockalingam, A. ; Rajan, B. Sundar (2009) Full-rate precoding in V-BLAST with angle parameter feedback In: 2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications, 13-16 September 2009, Tokyo, Japan.
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Official URL: http://ieeexplore.ieee.org/document/5450067/
Related URL: http://dx.doi.org/10.1109/PIMRC.2009.5450067
Abstract
In this paper, we present novel precoder designs for V-BLAST systems which achieve full-rate. We first present a precoding scheme based on algebraic lattices over real number fields. We prove that this full-rate scheme achieves full-diversity, assuming availability of full channel state information at the transmitter. We then propose a precoding scheme which achieves full-rate and high orders of diversity with limited feedback. The proposed scheme involves a precoder codebook design consisting of unitary matrices parametrized by a single angular parameter, thereby requiring less feedback overhead. Our simulation results show that the proposed limited feedback precoding scheme provides a performance improvement of 1.5 dB and 2.5 dB at a bit error rate of 10−3 over existing schemes for 2×2 and 4×4 V-BLAST systems, respectively, using 4-QAM.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Source: | Copyright of this article belongs to Institute of Electrical and Electronics Engineers. |
| Keywords: | Diversity; MIMO Precoding; Full-rate; Limited Feedback; V-BLAST |
| ID Code: | 102284 |
| Deposited On: | 26 Mar 2017 14:45 |
| Last Modified: | 26 Mar 2017 14:45 |
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