Multiuser MIMO Precoding with Per-Antenna Continuous-Time Constant-Envelope Constraints

被引:0
|
作者
Mollen, Christopher [1 ]
Larsson, Erik G. [1 ]
机构
[1] Linkoping Univ, Dept Elect Engn ISY, S-58183 Linkoping, Sweden
关键词
massive MIMO; multiuser precoding; constant-envelope transmission; PAR; MASSIVE MIMO;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
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.
引用
收藏
页码:261 / 265
页数:5
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