Energy-Efficient Resource Allocation in OFDM Systems With Distributed Antennas

2014 ◽  
Vol 63 (3) ◽  
pp. 1223-1231 ◽  
Author(s):  
Chunlong He ◽  
Geoffrey Ye Li ◽  
Fu-Chun Zheng ◽  
Xiaohu You
Keyword(s):  
Resource Allocation ◽  
Energy Efficient ◽  
Ofdm Systems ◽  
Efficient Resource ◽  
Energy Efficient Resource Allocation ◽  
Distributed Antennas

scholarly journals Chunk-Based Energy Efficient Resource Allocation in OFDMA Systems

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Yong Li ◽  
Zhengguang Zheng ◽  
Mingyue Zhao ◽  
Shan Jin ◽  
Zhangqin Huang
Keyword(s):  
Resource Allocation ◽  
Energy Efficient ◽  
Orthogonal Frequency Division Multiplexing ◽  
Optimization Problem ◽  
Low Complexity ◽  
Spectrum Efficiency ◽  
Ofdm Systems ◽  
Efficient Resource ◽  
Energy Efficient Resource Allocation ◽  
Frequency Selective Channels

Energy efficiency (EE) capacity analysis of the chunk-based resource allocation is presented by considering the minimum spectrum efficiency (SE) constraint in downlink multiuser orthogonal frequency division multiplexing (OFDM) systems. Considering the minimum SE requirement, an optimization problem to maximize EE with limited transmit power is formulated over frequency selective channels. Based on this model, a low-complexity energy efficient resource allocation is proposed. The effects of system parameters, such as the average channel gain-to-noise ratio (CNR) and the number of subcarriers per chunk, are evaluated. Numerical results demonstrate the effectiveness of the proposed scheme for balancing the EE and SE.

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