Code Design for MIMO Downlink with Imperfect CSIT

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In this letter, we implement a simplified version of the Cover - van der Meulen - Hajek - Pursley (CMHP) coding originally characterized by Wajcer, Wiesel, and Shamai. The vector Gaussian broadcast channel with imperfect channel state information at the transmitter (CSIT) is considered where the transmitter only knows the channel mean and variance. Our focus is on the implementation and performance analysis of CMHP under the imperfect CSIT model using practical codes. Turbo codes described in IEEE 802.20 draft specification and quadrature amplitude modulation are used to implement CMHP. In order to find the optimal power allocation and beamforming vectors which maximize the sum rate with practical codes, we introduce the SINR penalty factor. The SNRs that achieve various target spectral efficiency are presented and analyzed.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2010-01
Language
English
Article Type
Article
Keywords

ACHIEVABLE RATE REGION; BROADCAST CHANNEL; DIRTY PAPER; CAPACITY; DUALITY

Citation

IEEE TRANSACTIONS ON COMMUNICATIONS, v.58, no.1, pp.89 - 94

ISSN
0090-6778
DOI
10.1109/TCOMM.2010.01.080306
URI
http://hdl.handle.net/10203/96591
Appears in Collection
EE-Journal Papers(저널논문)
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