Impact of I/Q Imbalance on Amplify-and-Forward Relaying: Optimal Detector Design and Error Performance

2019 ◽  
Vol 67 (5) ◽  
pp. 3154-3166 ◽  
Author(s):  
Ayse Elif Canbilen ◽  
Salama Said Ikki ◽  
Ertugrul Basar ◽  
Seyfettin Sinan Gultekin ◽  
Ibrahim Develi
Keyword(s):  
Amplify And Forward ◽  
Error Performance ◽  
Amplify And Forward Relaying ◽  
Optimal Detector ◽  
Detector Design

scholarly journals Detector Design and Complexity Analysis for Cooperative Communications in Intersymbol Interference Fading Channels

2011 ◽  
Vol 2011 ◽  
pp. 1-9
Author(s):  
Yanjie Peng ◽  
Andrew G. Klein ◽  
Xinming Huang
Keyword(s):  
Fading Channels ◽  
Cooperative Communications ◽  
Viterbi Algorithm ◽  
Intersymbol Interference ◽  
Complexity Analysis ◽  
Spatial Diversity ◽  
Amplify And Forward ◽  
Optimal Detector ◽  
Isi Channels ◽  
Detector Design

The area of cooperative communications has recently attracted lots of research interest because of the potential benefit of increased spatial diversity. In this paper, we study the detector design for cooperative communications in intersymbol interference (ISI) channels. A novel system framework employing nonorthogonal amplify-and-forward half-duplex relays through ISI channels is introduced. We focus on detector design and first consider an optimal detector that consists of a whitening filter and a maximum-likelihood sequence estimator (MLSE). However, such an optimal detector embedded with Viterbi algorithm has practical issues of high complexity if the relay period is long. Consequently, we adopt a multitrellis Viterbi algorithm (MVA) that reduces the complexity significantly but still achieves near-optimal performance. Simulation results demonstrate the performance of both the optimal and near-optimal detector designs.

scholarly journals Short-Packet Two-Way Amplify-and-Forward Relaying

2018 ◽  
Vol 25 (2) ◽  
pp. 263-267 ◽  
Author(s):  
Yifan Gu ◽  
He Chen ◽  
Yonghui Li ◽  
Lingyang Song ◽  
Branka Vucetic
Keyword(s):  
Amplify And Forward ◽  
Amplify And Forward Relaying ◽  
Short Packet
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