A transmission scheme for the multiuser MIMO downlink, where the transmit signal from each antenna has constant envelope and a limited bandwidth, is proposed in order to enable the use of highly efficient, nonlinear amplifiers at the base station. To evaluate its performance, an achievable rate is derived and the necessary transmit power of the proposed scheme is computed for a system with 40 antennas that serves 4 users at data rates around 1 bpcu. For this system and 40% excess 30 dB-bandwidth, approximately 3 dB more transmit power is required to achieve the same sum-rate as without the constant-envelope constraints.
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Chinese Univ Hong Kong, Dept Elect Engn, Hong Kong, Peoples R ChinaChinese Univ Hong Kong, Dept Elect Engn, Hong Kong, Peoples R China
Shao, Mingjie
Li, Qiang
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Univ Elect Sci & Technol China, Sch Informat & Commun Engn, Chengdu 611731, Sichuan, Peoples R China
Shenzhen Cyberspace Lab, Peng Cheng Lab, Shenzhen 518052, Peoples R ChinaChinese Univ Hong Kong, Dept Elect Engn, Hong Kong, Peoples R China
Li, Qiang
Ma, Wing-Kin
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Chinese Univ Hong Kong, Dept Elect Engn, Hong Kong, Peoples R ChinaChinese Univ Hong Kong, Dept Elect Engn, Hong Kong, Peoples R China
Ma, Wing-Kin
So, Anthony Man-Cho
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Chinese Univ Hong Kong, Dept Syst Engn & Engn Management, Hong Kong, Peoples R ChinaChinese Univ Hong Kong, Dept Elect Engn, Hong Kong, Peoples R China
机构:
Hong Kong Univ Sci & Technol, Dept Elect & Comp Engn, Hong Kong, Hong Kong, Peoples R ChinaHong Kong Univ Sci & Technol, Dept Elect & Comp Engn, Hong Kong, Hong Kong, Peoples R China
Liu, An
Lau, Vincent K. N.
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Hong Kong Univ Sci & Technol, Dept Elect & Comp Engn, Hong Kong, Hong Kong, Peoples R ChinaHong Kong Univ Sci & Technol, Dept Elect & Comp Engn, Hong Kong, Hong Kong, Peoples R China
机构:
Southeast Univ, Natl Mobile Commun Res Lab, Nanjing 210096, Peoples R ChinaSoutheast Univ, Natl Mobile Commun Res Lab, Nanjing 210096, Peoples R China
He, Yunfeng
He, Hengtao
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Southeast Univ, Natl Mobile Commun Res Lab, Nanjing 210096, Peoples R ChinaSoutheast Univ, Natl Mobile Commun Res Lab, Nanjing 210096, Peoples R China
He, Hengtao
Wen, Chao-Kai
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Natl Sun Yat Sen Univ, Inst Commun Engn, Kaohsiung 804, TaiwanSoutheast Univ, Natl Mobile Commun Res Lab, Nanjing 210096, Peoples R China
Wen, Chao-Kai
Jin, Shi
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Southeast Univ, Natl Mobile Commun Res Lab, Nanjing 210096, Peoples R ChinaSoutheast Univ, Natl Mobile Commun Res Lab, Nanjing 210096, Peoples R China