In wireless communications, knowledge of the channel coefficients is required for coherent
demodulation. In this thesis, a blind channel estimation method based on the Lloyd-Max
algorithm is proposed for single-tap fading channels. The algorithm estimates the constellation
points for the received signal using an iterative least squares approach. The algorithm is
investigated for fast-frequency hopping systems with small block lengths and operating under
partial-band and partial-time jamming for both detecting the jammer and estimating the
channel. The performance of the Lloyd-Max channel estimation algorithm is compared to the
performance of pilot-based channel estimation algorithms which also use the least squares
approach and non-coherent demodulation and decoding.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12613333/index.pdf |
| Date | 01 June 2011 |
| Creators | Dizdar, Onur |
| Contributors | Yilmaz, Ali Ozgur |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for public access |
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