S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Electrical and Computer Engineering (전기·정보공학부) Journal Papers (저널논문_전기·정보공학부)
Pilot symbol initiated sub-optimal sequence estimation algorithm for QAM signals
- Lee, Jong-Ho; Kim, Seong-Cheol; Han, Jae Choong
- Issue Date
- Electronics Letters, 2002, 38, (17), pp. 972-974
- A sub-optimal decision directed decoding algorithm based on the expectation-maximisation algorithm is proposed. The algorithm performs iterative sequence estimation assuming quadrature amplitude modulation signals in a frequency non-selective fading channel. The iteration begins using periodically inserted pilot symbols, and it was observed that the algorithm converges mostly within two iterations. The bit error rate performances of the proposed algorithm are evaluated using computer simulation. The results show that the proposed algorithm performs better than conventional schemes.
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