An Integrated Message-Passing Detector and Decoder for Polar-Coded Massive MIMO Systems
| Autor: | Chen, Yan-Tong, 陳彥同 |
|---|---|
| Rok vydání: | 2016 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 105 A 1.34mm2 40nm CMOS soft-output message-passing detector and bidirectional polar decoder are designed for a QPSK massive MIMO system. The proposed reliable symbol interference cancellation technique and adaptive variance detection reduce the complexity of message passing detector (MPD) by more than 90% and generate soft log likelihood ratio (LLR) information for an ECC decoder. Exploiting a folded memory configuration saves half memory elements. An interleaved bidirectional propagation double column polar decoder is proposed to reduce the total latency of the whole decoding procedure. This work presents the first integration of an MPD and a polar decoder, delivering a throughput of 7.61Gb/s for massive MIMO systems. A soft-output MPD, which is essential to maximize channel capacity, is proposed. Compared to previous solutions, the proposed MPD achieves a 6.9 higher throughput with 49% less energy, despite the soft outputs. The proposed bidirectional polar decoder achieves a 1.35 increase in throughput with comparable energy inputs. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
|