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JACIII Vol.27 No.1 pp. 96-100
doi: 10.20965/jaciii.2023.p0096
(2023)

Research Paper:

Symbol Error Probability Optimization of OFDM Bidirectional AF Relaying Systems

Dong Qin*,† and Tianqing Zhou**

*School of Information Engineering, Nanchang University
No.999 Xuefu Avenue, Honggutan District, Nanchang City, Jiangxi 330031, China

**School of Information Engineering, East China Jiaotong University
No.808 Shuanggang Road, Nanchang, Jiangxi 330013, China

Corresponding author

Received:
November 29, 2019
Accepted:
August 29, 2022
Published:
January 20, 2023
Keywords:
amplify-and-forward, symbol error probability, power allocation
Abstract
Symbol Error Probability Optimization of OFDM Bidirectional AF Relaying Systems

The effect of the number of relays on the symbol error probability performance

This paper considers that two transceivers exchange orthogonal frequency division multiplexing (OFDM) signals with the aid of multiple bidirectional amplify and forward (AF) relays. Unlike most researchers who care about sum rate maximization issues to improve transmission efficiency, we formulate a symbol error probability (SEP) minimization problem under total power constraint because high data rate may degrade SEP performance. A joint algorithm of power allocation and relay selection is proposed to study their impact on the SEP performance. The closed-form solution of power allocation is not a form of water filling widely used in the sum rate maximum problem. Both analytical and simulation results clearly demonstrate the superiority of our algorithm.

Cite this article as:
D. Qin and T. Zhou, “Symbol Error Probability Optimization of OFDM Bidirectional AF Relaying Systems,” J. Adv. Comput. Intell. Intell. Inform., Vol.27, No.1, pp. 96-100, 2023.
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Last updated on Feb. 01, 2023