Optimal Sequence Detection and Optimal Symbol-by-Symbol Detection: Similar Algorithms

Optimal Sequence Detection and Optimal Symbol-by- Symbol Detection: Similar Algorithms

An algorithm is derived which performs optimal symbolby-symbol detection of a pulse amplitude modulated sequence. The algorithm is similar to the Viterhi algorithm with the optimality criterion optimal symbol detection rather than optimal sequence detection. A salient common feature is the merge phenomenon which allows common decisions to be made before the entire sequence is received.

Detection with embedded known symbols: optimal symbol placement and equalization

Symbol-by-Symbol Maximum Likelihood Detection for Cooperative Molecular Communication

In this paper, symbol-by-symbol maximum likelihood (ML) detection is proposed for a cooperative diffusionbased molecular communication (MC) system. In this system, a fusion center (FC) chooses the transmitter (TX) symbol that is more likely, given the likelihood of its observations from multiple receivers (RXs), where the TX sends a common information symbol to all RXs. The transmission of a se...

Multiple symbol partially coherent detection of MPSK

In this article, it is shown that by using the known (or estimated) value of carrier tracking loop SNR in the decision metric, it is possible to improve the error probability performance of a partially coherent multiple phase-shift-keying (MPSK) system relative to that corresponding to the commonly used ideal coherent decision rule. Using a maximum-likelihood approach, an optimum decision metri...

Multiple-symbol differential detection with interference suppression

A multiple-symbol differential detector is formulated for -ary differential phase-shift keying modulation where the channel state information is unknown to the receiver. The maximum-likelihood decision statistic is derived for the detector, and its performance is demonstrated by analysis and simulation. Under the Gaussian assumption for the aggregate interference plus noise, an exact expression...