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Institutional Repository [SANDBOX]
Technical University of Crete
Technical University of Crete
EN
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EL
| URI: | http://purl.tuc.gr/dl/dias/79CF6D99-1DCA-4DA4-97AE-3395D79C0009 | ||
| Year | 2016 | ||
| Type of Item | Conference Full Paper | ||
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| Bibliographic Citation | Y. Fountzoulas, D. Chachlakis, G. N. Karystinos and A. Bletsas, "GLRT-optimal blind MSK detection with log-linear complexity," in 23rd International Conference on Telecommunications, 2016. doi: 10.1109/ICT.2016.7500403 https://doi.org/10.1109/ICT.2016.7500403 | ||
| Appears in Collections |
Minimum-shift keying (MSK) limits problems associated with nonlinear distortion and is used in a variety of applications, like signal transmission from satellites and broadcasting. Although the optimal coherent MSK receiver simplifies to constant-complexity symbol-by-symbol detection, optimal blind reception of MSK takes the form of sequence detection (due to channel-induced memory) which has exponential (in the sequence length) complexity when implemented through an exhaustive search among all possible sequences. In this work, we present an algorithm that performs generalized-likelihood-ratio-test (GLRT) optimal blind sequence detection of MSK signals in flat fading with log-linear (in the sequence length) complexity. Moreover, for Rayleigh fading channels, the proposed algorithm is equivalent to the maximum-likelihood (ML) blind sequence detector. Simulation studies indicate that the optimal blind MSK detector attains coherent-detection performance when the sequence length is on the order of 100, offering a 5-6 dB gain over the typical single-symbol detector.
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