Performance of Linear Receivers for Wideband Massive MIMO with One-Bit ADCs
Conference: WSA 2016 - 20th International ITG Workshop on Smart Antennas
03/09/2016 - 03/11/2016 at München, Deutschland
Proceedings: WSA 2016
Pages: 7Language: englishTyp: PDF
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Authors:
Mollen, Christopher; Larsson, Erik G. (Linköping University, Dept. of Electrical Engineering, 581 83 Linköping, Sweden)
Choi, Junil; Heath, Robert W. Jr. (University of Texas at Austin, Dept. of Electrical and Computer Engineering, Austin, TX 78712, USA)
Abstract:
The power consumption of analog-to-digital converters (ADCs) grows linearly in the number of antennas in massive MIMO base stations. To reduce power consumption, one-bit ADCs can be used. It is believed that the nonlinear distortion of onebit ADCs makes channel estimation and symbol equalization in such systems computationally complex and resource demanding. In this paper, it is shown that low-complexity linear channel estimation and symbol equalization are feasible in massive MIMO with one-bit ADCs when the number of channel taps is large. The effective SINR of the received symbol estimates of a maximum-ratio combiner with estimated channel state information is 4 dB lower in a system with one-bit ADCs than in an equivalent unquantized system.