Energy efficiency of IDF MIMO relay system with antenna selection under a holistic power model

2016 ◽  
Author(s):  
Benli Li ◽  
Li Chen ◽  
Guo Wei
Keyword(s):  
Energy Efficiency ◽  
Antenna Selection ◽  
Power Model ◽  
Relay System ◽  
Mimo Relay

scholarly journals Low-Resolution ADCs for Two-Hop Massive MIMO Relay System under Rician Channels

Entropy ◽  
2021 ◽  
Vol 23 (8) ◽  
pp. 1074
Author(s):  
Shujuan Yu ◽  
Xinyi Liu ◽  
Jian Cao ◽  
Yun Zhang
Keyword(s):  
Energy Efficiency ◽  
Closed Form ◽  
Massive Mimo ◽  
Closed Form Expression ◽  
Low Resolution ◽  
Relay System ◽  
Mimo Relay ◽  
Sum Rate ◽  
Simulation Results ◽  
The One

This paper works on building an effective massive multi-input multi-output (MIMO) relay system by increasing the achievable sum rate and energy efficiency. First, we design a two-hop massive MIMO relay system instead of a one-hop system to shorten the distance and create a Line-of-Sight (LOS) path between relays. Second, we apply Rician channels between relays in this system. Third, we apply low-resolution Analog-to-Digital Converters (ADCs) at both relays to quantize signals, and apply Amplify-and-Forward (AF) and Maximum Ratio Combining (MRC) to the processed signal at relay R1 and relay R2 correspondingly. Fourth, we use higher-order statistics to derive the closed-form expression of the achievable sum rate. Fifth, we derive the power scaling law and achieve the asymptotic expressions under different power scales. Last, we validate the correctness of theoretical analysis with numerical simulation results and show the superiority of the two-hop relay system over the one-hop relay system. From both closed-form expressions and simulation results, we discover that the two-hop system has a higher achievable sum rate than the one-hop system. Besides, the energy efficiency in the two-hop system is higher than the one-hop system. Moreover, in the two-hop system, when quantization bits q=4, the achievable sum rate converges. Therefore, deploying low-resolution ADCs can improve the energy efficiency and achieve a fairly considerable achievable sum rate.

Throughput and Energy Efficiency Maximization for Cognitive Relay System

2012 ◽  
Vol E95.B (1) ◽  
pp. 226-233 ◽  
Author(s):  
You XU ◽  
Yunzhou LI ◽  
Ming ZHAO ◽  
Hongxing ZOU
Keyword(s):  
Energy Efficiency ◽  
Relay System

scholarly journals MAC-PHY Cross-Layer for High Channel Capacity of Multiple-Hop MIMO Relay System

2012 ◽  
Vol 04 (02) ◽  
pp. 129-138 ◽  
Author(s):  
Pham Thanh Hiep ◽  
Chika Sugimoto ◽  
Ryuji Kohno
Keyword(s):  
Channel Capacity ◽  
Cross Layer ◽  
Relay System ◽  
Mimo Relay
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