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| A NOVEL FAST ALGORITHM FOR BLIND SOURCE SEQUENCE ESTIMATION |
| Yang Xiaodong①; Mou Songhui①;Yang Rijie②; Zhao Junwei② |
| ①The First Highway Survey & Design Institute; Ministry of Comm.,Xi 'an 710068;②College of Marine Engineering Northwestern Polytechnical University Xi 'an 710072 |
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Abstract Under the situation of unknown channel response,blind sequence estimation(BSE) recovers source symbols from received noisy data directly.As an optimal information detection approach,BSE babed on Viterbi algorithm needs searching a trellis whose state number is exponential to the observation length lt is not practical when observation length increases unceasingly.A novel BSE scheme is proposed in this paper,which uses several first estimated resultS tO recover current symbol.The computation burden is lower because it is irrelevent to observation length．The feasibility has been checked by simulation results.
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Received: 16 December 1997
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2000, Vol. 22 
