Name
Abstract | ||
|---|---|---|
In this paper, we propose two VLSI applicable approaches to improving performance of soft-output Viterbi algorithm (SOVA)-based turbo decoders. In the first approach, a pseudo-median filter is employed to modify the soft outputs of each SOVA-based constituent decoder. Compared with conventional SOVA-based turbo decoders, an extra coding gain of 0.2 dB can be achieved for a wide range of target bit-error-rate (BER). In the second approach, an easily obtainable variable and a simple mapping function are used to avoid the complex computation of the scaling factor for extrinsic information in SOVA-based turbo decoders. An extra coding gain of 0.3 to 0.5 dB can be obtained in general. This approach does not require signal-to-noise ratio (SNR) related information while the original method does. The hardware overhead and the extra latency for both approaches are negligible |
Year | DOI | Venue |
|---|---|---|
2000 | 10.1109/ISCAS.2000.857086 | ISCAS |
Keywords | Field | DocType |
vlsi,viterbi decoding,digital signal processing chips,error statistics,median filters,turbo codes,ber,dsp chip,vlsi sova-based turbo decoders,bit-error-rate,mapping function,pseudo-median filter,soft-output viterbi algorithm,coding gain,signal to noise ratio,very large scale integration,decoding,hardware,soft output viterbi algorithm,viterbi algorithm,bit error rate,median filter,gain | Turbo,Coding gain,Soft output Viterbi algorithm,Computer science,Turbo code,Electronic engineering,Viterbi decoder,Decoding methods,Very-large-scale integration,Viterbi algorithm | Conference |
Volume | ISBN | Citations |
1 | 0-7803-5482-6 | 3 |
PageRank | References | Authors |
0.54 | 2 | 3 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Zhongfeng Wang | 1 | 3 | 0.54 |
| H. Suzuki | 2 | 238 | 31.31 |
| keshab k parhi | 3 | 3235 | 369.07 |