scholarly journals Efficient Power Allocation for Video over Superposition Coding

2013 ◽  
Author(s):  
Chun Pong Lau ◽  
K. Jamshaid ◽  
B. Shihada
Keyword(s):  
Power Allocation ◽  
Superposition Coding ◽  
Efficient Power

scholarly journals Unfolding WMMSE using Graph Neural Networks for Efficient Power Allocation

2021 ◽  
pp. 1-1
Author(s):  
Arindam Chowdhury ◽  
Gunjan Verma ◽  
Chirag Rao ◽  
Ananthram Swami ◽  
Santiago Segarra
Keyword(s):  
Neural Networks ◽  
Power Allocation ◽  
Graph Neural Networks ◽  
Efficient Power

Subcarrier and Power Allocation Algorithm for Spectral Efficiency Maximization in Superposition Coding OFDMA Systems

2015 ◽  
Vol 24 (05) ◽  
pp. 1550061
Author(s):  
Mateus de Paula Marques ◽  
Taufik Abrão
Keyword(s):  
Power Allocation ◽  
Spectral Efficiency ◽  
Time Complexity ◽  
Multiple Access ◽  
Optimization Problem ◽  
Frequency Division ◽  
Superposition Coding ◽  
Ofdma System ◽  
Transmission Strategy ◽  
Throughput Gain

This paper addresses the optimization problem on subcarrier and power allocation of orthogonal frequency division multiple access (OFDMA) system under spectral efficiency (SE) metric when deploying superposition coding (SC) transmission strategy. An algorithm with polynomial time complexity, of the order of (UN log 2(N)) has been proposed for sub-optimal SE maximization. Results indicate that the system SE increases with the use of SC technique. Besides, the throughput gain with SC adoption increases when the number of users (U) approaches the number of subcarriers (N) available in the system.

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