Outage performance of multiple-input–multiple-output decode-and-forward relay networks with the Nth-best relay selection scheme in the presence of co-channel interference

2014 ◽  
Vol 8 (15) ◽  
pp. 2762-2773 ◽  
Author(s):  
Guoxin Li ◽  
Guochun Ren ◽  
Jin Chen ◽  
Yuzhen Huang
Keyword(s):  
Relay Selection ◽  
Multiple Input Multiple Output ◽  
Relay Networks ◽  
Decode And Forward ◽  
Selection Scheme ◽  
Outage Performance ◽  
Best Relay Selection ◽  
Multiple Input ◽  
Channel Interference ◽  
Input Multiple Output

Optimal Beam-Forming Design in Cognitive Relay Networks under Interference Threshold

2013 ◽  
Vol 850-851 ◽  
pp. 561-566
Author(s):  
Zi Jun Liu ◽  
Zhan Gao ◽  
Guo Xin Li ◽  
Hai Tao Zhang
Keyword(s):  
Multiple Input Multiple Output ◽  
Relay Networks ◽  
Primary User ◽  
Primary Data ◽  
Mimo Antenna ◽  
Cognitive Relay Networks ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Optimal Beam ◽  
Cognitive User

Recently, a new model for cognitive radio networks appears, in which a cognitive user (CU) can relay the primary data stream to improve the performance of the primary user s communication. Traditionally, the transmitter of the cognitive users will send data to the receiver of the cognitive users and relay the data sent from the primary user (PU) in different time slots. However, Multiple Input Multiple Output (MIMO) provides a remarkable increase in the spectral efficiency, which can transmit multiple independent data streams in a time slot with MIMO antenna. Based on the MIMO technique, we propose a novel framework, in which the cognitive user near by the primary user is equipped with MIMO antenna. In this paper, we search for the maximum sum-rate of the cognitive user, limiting the interference to the primary users. Simulation results show that the proposed method can really improve the performance of the cognitive relay networks.

scholarly journals Outage Performance of Cognitive Relay Networks with Best Relay Selection in Nakagami-m Channels

2013 ◽  
Vol 05 (03) ◽  
pp. 166-170 ◽  
Author(s):  
Zongsheng Zhang ◽  
Qihui Wu ◽  
Jinlong Wang ◽  
Xueqiang Zheng ◽  
Xinhong Shao ◽  
...  
Keyword(s):  
Relay Selection ◽  
Relay Networks ◽  
Outage Performance ◽  
Cognitive Relay Networks ◽  
Best Relay Selection ◽  
M Channels
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