A comparison study between different sliding window decorrelating detectors for asynchronous CDMA-UMTS

Among the different receiver architectures which are able to cope with the multiple access interference (MAI) impediments, the decorrelator structure based on linear filtering is a good potential solution since it leads to a near-far resistant algorithm in CDMA systems with a moderate complexity. However, since, the ideal asynchronous decorrelator requires the observation of the entire input bit sequence, it is not suitable for practical applications. In this paper, we propose some methods using correction for both edges of the finite observed window.