Abstract
EDGE uses the 8PSK modulation scheme. It is difficult to employ optimum equalisation due to the high computation complexity required. Consequently, a sub-optimum technique offering an approximation to maximum likelihood sequence estimation performance is required. A simple, reduced complexity fractional spaced equaliser structure involving the delayed decision feedback sequence estimation is therefore presented. The fractional spaced approach does not require additional pre-processing creating a minimum phase overall channel impulse. It is suitable for unknown channels and has near optimum performance.
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