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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Yanjie Peng Kai Zhang Klein, A.G. Xinming Huang |
| Copyright Year | 2010 |
| Description | Author affiliation: Department of Electrical and Computer Engineering, Worcester Polytechnic Institute, Worcester, MA 01609 (Yanjie Peng; Kai Zhang; Klein, A.G.; Xinming Huang) |
| Abstract | Cooperative communication has attracted a lot of attention for its ability to exploit increased spatial diversity available at distributed antennas on other nodes in the system. For a cooperative system employing non-orthogonal amplify-and-forward half-duplex relays, the maximum likelihood sequence estimation (MLSE) is the optimal detector in intersymbol interference (ISI) channels. The implementation complexity of the optimal detector scales exponentially with the length of effective channel impulse response (CIR), however, which becomes very long and sparse as the relay period increases. In this paper, we focus on suboptimal detector design, complexity, and performance for cooperative relays in ISI channels. We first explore use of a decision feedback sequence estimator (DFSE). Next, to exploit the structured sparsity in the effective CIR, we consider an iterative belief propagation (BP) algorithm based detector. Using simulation results, we explore the tradeoff between complexity and performance. |
| Starting Page | 1753 |
| Ending Page | 1758 |
| File Size | 536676 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781424481781 |
| ISSN | 21557586 |
| e-ISBN | 9781424481804 |
| DOI | 10.1109/MILCOM.2010.5680238 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-10-31 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Detectors Relays Complexity theory Maximum likelihood estimation Measurement Computer architecture Viterbi algorithm |
| Content Type | Text |
| Resource Type | Article |
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