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Research on Power Allocation in Cooperative Communication

Author: ZhangYuan
Tutor: MaSheXiang
School: Tianjin University of Technology
Course: Signal and Information Processing
Keywords: Collaborative communication Power Distribution Channel capacity Relay node
CLC: TN92
Type: Master's thesis
Year: 2011
Downloads: 14
Quote: 0
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Abstract


In the wireless communication system , multipath fading seriously affect system transmission performance . Therefore , multiple-input , multiple - output (MIMO) system the spatial diversity technique is an effective method against multipath fading phenomenon . This method does not reduce the utilization of the spectrum . However , many of the mobile terminal , due to the limitations of size, power consumption , cost , inconvenient to install multiple antennas . Therefore , cooperative diversity is through sharing partners antennas constitute a virtual multi - antenna system , to form virtual MIMO systems , distributed spatial diversity . In cooperative communication , the relay transmission by the collaboration of the source node and the relay node is completed . The source node and the relay node to transmit information need to consume power. Therefore , the power allocation problem is a key technology in cooperative communications , and its purpose is reasonable allocation of the power to increase the channel capacity of the system . This paper studies the three - collaborative node power distribution system and its channel capacity performance analysis , do the following : 1 . Collaborative communication merge mode , and the performance of various consolidation mode simulation and compare their performance . 2 was studied in the equal-gain combination mode , respectively based on the case of the fixed channel gain and Gaussian channel gain , the allocation of the transmission power of the source node and its channel capacity of the system , and the performance simulation and analysis . 3 in the maximum ratio combining mode , the allocation of the transmission power of the source node and its channel capacity of the system , and performance simulation and analysis .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications
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