Abstract
We propose a new algorithm for noncoherent sequence detection of M-ary phase-shift-keying (M-PSK) symbols transmitted over a block fading channel. The algorithm is of complexity O(T), where T is the sequence length, and is therefore computationally superior to existing maximum-likelihood (ML) detectors of complexity O(T logT). Our detector is based on a new approximation we propose to the noncoherent ML function. We show that by using this close approximation, the detection problem reduces to a nearest lattice point problem for the lattice A n*, from which we derive our O(T) approach. Simulation results are provided that show the difference in bit error rate is negligibly small for a wide range of signal-to-noise ratios.
Original language | English |
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Title of host publication | 2009 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2009 |
Subtitle of host publication | Proceedings |
Place of Publication | Pistacaway, NJ |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
Pages | 2465-2468 |
Number of pages | 4 |
ISBN (Electronic) | 9781424423545 |
ISBN (Print) | 9781424423538 |
DOIs | |
Publication status | Published - 2009 |
Externally published | Yes |
Event | 2009 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2009 - Taipei, Taiwan Duration: 19 Apr 2009 → 24 Apr 2009 |
Other
Other | 2009 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2009 |
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Country/Territory | Taiwan |
City | Taipei |
Period | 19/04/09 → 24/04/09 |
Keywords
- Communication systems
- Differential phase shift keying
- Mobile communication