Decision Threshold-aided Fast Z-Forward in Wireless Multirelay Communications

Jianrong BAO; Yunxuan LIN; Chao LIU; Bin JIANG; Fang ZHU; Jianhai HE

doi:10.11999/JEIT200183

Volume 43 Issue 5

May 2021

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Article Navigation > Journal of Electronics & Information Technology > 2021 > 43(5): 1315-1322

Jianrong BAO, Yunxuan LIN, Chao LIU, Bin JIANG, Fang ZHU, Jianhai HE. Decision Threshold-aided Fast Z-Forward in Wireless Multirelay Communications[J]. Journal of Electronics & Information Technology, 2021, 43(5): 1315-1322. doi: 10.11999/JEIT200183

Citation:

Jianrong BAO, Yunxuan LIN, Chao LIU, Bin JIANG, Fang ZHU, Jianhai HE. Decision Threshold-aided Fast Z-Forward in Wireless Multirelay Communications[J]. Journal of Electronics & Information Technology, 2021, 43(5): 1315-1322. doi: 10.11999/JEIT200183

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Decision Threshold-aided Fast Z-Forward in Wireless Multirelay Communications

doi: 10.11999/JEIT200183

1.
School of Telecommunication Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
2.
School of Electronic Information Engineering, Ningbo Polytechnic, Ningbo 315800, China

Funds: Zhejiang Provincial Science and Technology Plan Project (LGG18F010011, LGG19F010004), The Fundamental Research Funds for the Provincial Universities of Zhejiang (GK209907299001-003), The National Natural Science Foundation of China (U1809201), Zhejiang Provincial National Natural Science Foundation (LY20F010010)

Received Date: 2020-03-20
Rev Recd Date: 2020-11-20

Available Online: 2020-11-25

Publish Date: 2021-05-18

Abstract

Abstract

In consideration of improper power allocation and insufficient relay selection in the current Z-Forward (ZF) scheme, an efficient Decision Threshold-aided Fast Z-Forward (DT-FZF) scheme is proposed to improve power and transmission efficiency. When the absolute value of the Log-Likelihood Ratio (LLR) of a source-relay reception is less than the decision threshold, the relay remains quiet. Otherwise, it directly sends the truncated LLR to the destination. In addition, the proposed DT-FZF scheme incorporates the Amplify-Forward(AF), Decode-Forward(DF), Piecewise-Forward(PF) and ZF schemes, all of which can be the special case of the proposed scheme. At a Bit Error Rate (BER) is of 10^–3, the DT-FZF scheme outperforms the ZF scheme by approximately 0.8 dB in a three-relay system.
- Multirelay networks,
- Cooperative communication,
- Z-Forward(ZF),
- Decision threshold

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References(19)

References

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