Name
Abstract | ||
|---|---|---|
Turbo decoders for modern wireless communication systems have to support high throughput over a wide range of code rates. In order to support the peak throughputs specified by modern standards, parallel turbo-decoding has become a necessity, rendering the corresponding VLSI implementation a highly challenging task. In this paper, we explore the implementation trade-offs of parallel turbo decoders based on sliding-window soft-input soft-output (SISO) maximum a-posteriori (MAP) component decoders. We first introduce a new approach that allows for a systematic throughput comparison between different SISO-decoder architectures, taking their individual trade-offs in terms of window length, error-rate performance and throughput into account. A corresponding analysis of existing architectures clearly shows that the latency of the sliding-window SISO decoders causes diminishing throughput gains with increasing degree of parallelism. In order to alleviate this parallel turbo-decoder predicament, we propose a new SISO-decoder architecture that leads to significant throughput gains and better hardware efficiency compared to existing architectures for the full range of code rates. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1109/TCSI.2013.2290831 | Circuits and Systems I: Regular Papers, IEEE Transactions |
Keywords | Field | DocType |
MIMO communication,VLSI,maximum likelihood decoding,turbo codes,MAP component decoders,SISO,VLSI implementation,code rates,error rate performance,high throughput wireless systems,maximum a-posteriori,parallel turbo decoding,sliding-window soft-input soft-output,window length,wireless communication systems,3GPP-LTE-Advanced,soft-input soft-output (SISO) maximum a-posteriori (MAP) decoding,turbo codes and parallel decoding,very-large scale integration (VLSI),wireless communications | Turbo,Wireless,Latency (engineering),Degree of parallelism,Computer science,Electronic engineering,Decoding methods,Throughput,Rendering (computer graphics),Very-large-scale integration | Journal |
Volume | Issue | ISSN |
61 | 6 | 1549-8328 |
Citations | PageRank | References |
15 | 0.76 | 13 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Christoph Roth | 1 | 52 | 3.56 |
| Sandro Belfanti | 2 | 15 | 0.76 |
| Christian Benkeser | 3 | 64 | 7.86 |
| Qiuting Huang | 4 | 399 | 145.90 |