Channel feedback based on complex 1-bit Bayesian compressed sensing in FDD massive MIMO systems
Article No.: 45, Pages 1 - 6
Abstract
In frequency division duplex (FDD) massive multi-input multi-output (MIMO) system, channel feedback is critical for beamforming and precoding. The previous codebook-based feedback scheme in 4G system cannot be reused since the codebook size will scale exponentially with the number of antennas. In the paper, we propose a 1-bit compressed sensing (CS) based channel feedback scheme. The sparse massive MIMO channel is estimated at the user equipment (UE), then it is compressed by 1-bit quantization at the UE. The quantized bits are fed back to the base station (BS) and are recovered by the complex 1-bit Bayesian CS algorithm which can also be used for other complex 1-bit CS models. The recovered channel is used for zero forcing beamforming for multiple user (MU) massive MIMO. The performance of the proposed algorithm is compared with other feedback schemes in view of per-user capacity in MU massive MIMO.
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Index Terms
- Channel feedback based on complex 1-bit Bayesian compressed sensing in FDD massive MIMO systems
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December 2019
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Published: 19 December 2019
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- Research-article
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- National Science Foundation of China
- China Postdoctoral Science Foundation Grant
- the self-determined research funds of CCNU
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AIIPCC '19
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- ASciE
AIIPCC '19: 2019 International Conference on Artificial Intelligence, Information Processing and Cloud Computing
December 19 - 21, 2019
Sanya, China
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AIIPCC '19 Paper Acceptance Rate 78 of 211 submissions, 37%;
Overall Acceptance Rate 78 of 211 submissions, 37%
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