Power Allocation Strategies in Block-Fading Two-Way Relay Networks
محل انتشار: دوفصلنامه مهندسی مخابرات، دوره: 8، شماره: 2
سال انتشار: 1398
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 351
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شناسه ملی سند علمی:
JR_JCESH-8-2_012
تاریخ نمایه سازی: 9 اردیبهشت 1399
چکیده مقاله:
This paper aims at investigating the superiority of power allocation strategies, based on calculus of variations in a point-to-point two-way relay-assisted channel incorporating the amplify and forward strategy. Single and multilayer coding strategies for two cases of having and not having the channel state information (CSI) at the transmitters are studied, respectively. Using the notion of calculus of variations, the optimum power allocation strategy across code layers for the case of employing Multilayer coding is derived and is shown to surpass the conventional outage approach employing single layer coding strategy in terms of the achievable sum rate of the network. Moreover, for the case of knowing the CSI at the transmitters, an adaptive power control strategy is analytically derived, and its achievable sum-rate is compared to that of the single-layer strategy under peak power constraint.
کلیدواژه ها:
نویسندگان
Sorosh Akhlaghi
Shahed
Sayed Ali Khodam Hoseini
Shahed University