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Code Design for MIMO Downlink with Imperfect CSIT
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DOI：10.1109/TCOMM.2010.01.080306.png)
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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.
Keyword:
Imperfect channel state information
downlink
broadcast channel
superposition coding
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8.3
论文数:
1.2W
被引数:
3.6W
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59th ENMC International Workshop: Spinal Muscular Atrophies: recent progress and revised diagnostic criteria 17–19 April 1998, Soestduinen, The Netherlands第59届ENMC国际研讨会: 脊髓性肌萎缩: 最新进展和修订的诊断标准1998年4月19日，荷兰Soestduinen
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