Constant-Envelope Multi-User Precoding for Frequency-Selective Massive MIMO Systems

Abstract

We consider downlink precoding in a frequency-selective multi-user Massive MIMO system with highly efficient but non-linear power amplifiers at the base station (BS). A low-complexity precoding algorithm is proposed, which generates constant-envelope (CE) signals at each BS antenna. To achieve a desired per-user information rate, the extra total transmit power required under the per-antenna CE constraint when compared to the commonly used less stringent total average transmit power constraint, is small.

Submitted to IEEE Wireless Communications Letters

References in corpus (1)

• Energy and Spectral Efficiency of Very Large Multiuser MIMO Systems

Cited by in corpus (4)

• A Framework for One-Bit and Constant-Envelope Precoding over Multiuser Massive MISO Channels
• Waveforms for the Massive MIMO Downlink: Amplifier Efficiency, Distortion and Performance
• Spatio-Temporal Waveform Design for Multi-user Massive MIMO Downlink with 1-bit Receivers
• Broadbeam for Massive MIMO Systems