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Iterative Semi-Coherent Receiver for Coded LoRa Systems
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DOI：10.1109/LCOMM.2023.3239823.png)
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摘要
En 中文
This letter presents a novel design of an iterative receiver for low-power long-range (LoRa) systems with channel coding and semi-coherent receiver. To enable soft-input-soft-output (SISO) decoding, closed-form expressions for the exact distribution of the received signal samples and the resulting log-likelihood ratios of the coded bits are obtained. Next, we propose an iterative semi-coherent receiver that performs iterative processing among the soft-output demodulator, the SISO channel decoder, and the blind channel estimator, i.e., without any training overhead. Simulation results show that our proposed receiver outperforms non-coherent receiver, and closely approaches the ideal coherent receiver's performance.
Keyword:
Symbols
Iterative decoding
Channel estimation
Iterative methods
Decoding
Receivers
Chirp
LoRa
LoRaWAN
channel coding
期刊
IF:
4.4
论文数:
1.3W
被引数:
2.2W
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