Unitary precoding and power control in MIMO systems with limited feedback

Spatial multiplexing (SM) proves effective in increasing data rate in a narrowband multiple-input multiple-output (MIMO) system. Past work has shown that unitary precoding with limited feedback can be used at the transmitter to improve the bit error rate (BER) performance. Further performance gain c...

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Vydáno v:IEEE Wireless Communications and Networking Conference, 2006. WCNC 2006 Ročník 3; s. 1221 - 1226
Hlavní autoři: Yellapantula, R., Yingwei Yao, Ansari, R.
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: IEEE 2006
Témata:
Bit error rate
Fading
Feedback
MIMO
Narrowband
Performance gain
Power control
Power generation
Samarium
Transmitters
ISBN:9781424402694, 1424402697
ISSN:1525-3511
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Shrnutí:Spatial multiplexing (SM) proves effective in increasing data rate in a narrowband multiple-input multiple-output (MIMO) system. Past work has shown that unitary precoding with limited feedback can be used at the transmitter to improve the bit error rate (BER) performance. Further performance gain can be achieved if power control is used along with unitary preceding at the transmitter. In this paper we propose a novel power control scheme called modified spatial-temporal truncated channel inversion (MST-TCI) for limited feedback MIMO systems in block Rayleigh fading channels. A low-complexity algorithm called codebook optimum index loading (COIL) is proposed to generate near-optimum codebooks for quantizing MST-TCI power control information. Simulation results show that the proposed scheme significantly outperforms the limited feedback unitary precoding scheme
ISBN:9781424402694
1424402697
ISSN:1525-3511
DOI:10.1109/WCNC.2006.1696460