Simple precoding algorithms using Gram–Schmidt orthonormalization process for multiuser relay communications with optimized power allocation

2012 ◽  
Vol 68 (5-6) ◽  
pp. 247-266 ◽  
Author(s):  
Hamid Meghdadi ◽  
Jean-Pierre Cances ◽  
Vahid Meghdadi
Keyword(s):  
Power Allocation ◽  
Relay Communications

scholarly journals Improving quality of service for cell-edge user in D2D-relay networks

2021 ◽  
Author(s):  
Xuefeng Xing ◽  
jing Cao ◽  
hongtao Zhou
Keyword(s):  
Quality Of Service ◽  
Power Allocation ◽  
Relay Networks ◽  
Spectrum Efficiency ◽  
Cell Edge ◽  
Relay Communications ◽  
Lagrangian Dual ◽  
Communication Scheme ◽  
Cell Edge User

Abstract In this paper, we investigate a scenario of D2D-relay communications where one D2D user may help cell-edge user to exchange information for improving its quality of service (QoS). We formulate a resource allocation problem, which aims at maximizing the data rate of the cell-edge user. In particular, we propose an iterative power allocation algorithm and derive the optimal closed-form power allocation expressions by Lagrangian dual method. Simulation results verify the theoretical solution and show that our D2D-relay scheme achieves higher spectrum efficiency than the traditional cellular-relay communication scheme.

Power allocation for NOMA in D2D relay communications

2021 ◽  
Vol 18 (1) ◽  
pp. 61-69
Author(s):  
Yan Cai ◽  
Chunhua Ke ◽  
Yiyang Ni ◽  
Jun Zhang ◽  
Hongbo Zhu
Keyword(s):  
Power Allocation ◽  
Relay Communications

scholarly journals Joint Power Allocation and Beamforming for Energy-Efficient Two-Way Multi-Relay Communications

2017 ◽  
Vol 16 (10) ◽  
pp. 6660-6671 ◽  
Author(s):  
Zhichao Sheng ◽  
Hoang Duong Tuan ◽  
Trung Q. Duong ◽  
H. Vincent Poor
Keyword(s):  
Power Allocation ◽  
Energy Efficient ◽  
Joint Power ◽  
Relay Communications

Precoding and Power Allocation for Full-Duplex MIMO Relays

2011 ◽  
Vol E94-B (8) ◽  
pp. 2316-2327 ◽  
Author(s):  
Jong-Ho LEE ◽  
Oh-Soon SHIN
Keyword(s):  
Power Allocation ◽  
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