Making MLSD-decisions on some individual symbols thresholding the matched filter output

A low complexity threshold detector making MLSD decisions in a multiuser environment

“…A low-complexity iterative threshold receiver, which we refer to as the Delta detector, was derived in [7,8,9]. This Delta detector makes the same decisions as an MLSD on some, but not necessarily all, bits.…”

“…In this section we brie y describe the detection algorithm presented in [7] and [8,9]. Consider a binary modulated data sequence transmitted through a known linear channel with additive Gaussian noise.…”

“…The detection algorithm, as described in [7], is iterative and works on blocks of data of length . If neither (4) nor (5) is satis ed, the detector fails to detect .…”

“…After the whole pipeline, iterations of the Delta detector are completed. As mentioned in Section II, and in [7], we do not know beforehand the number of iterations required to exhaust the detection capacity of the Delta detector. The number of required iterations depends on the application at hand and the received signal.…”