Adaptive modulation and coding for two-way relaying with amplify-and-forward protocols

作者：Sun Shaohui^*; Yang Kun; Wu Jianjun; Zhu Dalin; Lei Ming

来源：IET Communications, 2014, 8(7): 1017-1023.

DOI：10.1049/iet-com.2013.1053

• amplify and forward communication
• relay networks (telecommunication)
• adaptive codes
• adaptive modulation
• cooperative communication
• Rayleigh channels
• error statistics
• adaptive modulation
• adaptive coding
• amplify-and-forward protocols
• two-way relay network
• cooperative system
• frame error rate
• FER
• user terminals
• cumulative distribution function
• destination signal-to-noise ratio
• average spectral efficiency
• Rayleigh fading channels

In this study, the authors introduce adaptive modulation and coding in a two-way amplify-and-forward (AF) relay network to improve the system performance. They consider a cooperative system where two user nodes exchange information with the assistance of multiple two-way AF relays. In the proposed scheme, the user nodes adaptively choose the appropriate modulation and coding scheme to ensure that the frame error rate (FER) satisfies the system requirement; all relays are utilised to forward the received signals to the user terminals. Furthermore, they provide a better approximation of the cumulative distribution function of the destination signal-to-noise ratio; and thus, derive more accurate expressions including average spectral efficiency and average FER in closed-form, over Rayleigh fading channels. The theoretical analysis is verified by numerical results.

• 出版日期2014-5-6
• 单位北京大学