Code to compute one-bit CRB for estimating angular-domain channel parameters for massive MIMO.
Massive multiple-input multiple-output (MIMO) systems can significantly increase the spectral efficiency, mitigate propagation loss by exploiting large array gain, and reduce inter-user interference with high-resolution spatial beamforming. To reduce complexity and power consumption, several transceiver architectures have been proposed for mmWave massive MIMO systems: 1) an analog architecture, 2) a hybrid analog/digital architecture, and 3) a fully digital architecture with low-resolution ADCs.
To this end, we derive the Cramer-Rao bound (CRB) on estimating angular-domain channel parameters including angles-of-departure (AoDs), angles-of-arrival (AoAs), and associated channel path gains. Our analysis provides a simple tool to compare channel estimation performance among different one-bit quantization schemes. We also introduce a time-varying threshold scheme to one-bit ADCs to remove an ambiguity between the channel path gain and noise variance for the popular fixed zero-threshold scheme.
MATLAB 2016 or above.
Run mmWave_channelEst_angularDomain_1bit_CRBvsSNR.m
If you use the software, please cite the following:
@inproceedings{1bitCRB
author = {Wang, Pu and Li, Jian and Pajovic, Milutin and Boufounos, Petros T. and Orlik, Philip V.},
title = {On angular-domain channel estimation for one-bit massive {MIMO} systems with fixed and time-varying thresholds},
booktitle = {2017 51st Asilomar Conference on Signals, Systems, and Computers},
year = 2017,
pages = {1056-1060},
doi = {10.1109/ACSSC.2017.8335511},
url = {https://www.merl.com/publications/docs/TR2017-187.pdf}
}Pu (Perry) Wang: pwang@merl.com
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Released under AGPL-3.0-or-later license, as found in the LICENSE.md file.
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Copyright (C) 2018,2023 Mitsubishi Electric Research Laboratories (MERL).
SPDX-License-Identifier: AGPL-3.0-or-later