A novel hybrid method for tracking multiple indistinguishable maneuvering targets using a wireless sensor network is introduced in this paper. The problem of tracking the location of targets is formulated as a Maximum Likelihood Estimation. We propose a hybrid optimization method, which consists of an iterative and a heuristic search method, for finding the location of targets simultaneously. T...

This paper is concerned with the performance evaluation for the diversity decoding scheme in which space diversity technique and iterative decoding for non systematic convolutional error-correcting code are effectively combined. The concept of the diversity decoding is applied to an OFDM system (e.g. the digital terrestrial TV broadcasting system). This paper shows the performance evaluation fo...

The presence of both multiple-access interference (MAI) and intersymbol interference (ISI) constitutes a major impediment to reliable communications in multipath code-division multiple-access (CDMA) channels. In this paper, an iterative receiver structure is proposed for decoding multiuser information data in a convolutionally coded asynchronous multipath DS-CDMA system. The receiver performs t...

In this paper, multiple-symbol differential detection (MSDD) is applied to differentially encoded LDPC (DE-LDPC) coded systems, which can avoid phase tracking and channel estimation and compensate the performance loss of conventional differential detection. In the studied systems, the outer iterative decoding is performed between the MSDD softinput soft-output demodulator (SISOD) and the LDPC d...

In recent work (Feldman and Karger [8]), we introduced a new approach to decoding turbo-like codes based on linear programming (LP). We gave a precise characterization of the noise patterns that cause decoding error under the binary symmetric and additive white Gaussian noise channels. We used this characterization to prove that the word error rate is bounded by an inverse polynomial in the cod...

In this study, we consider joint channel decoding of Turbo code for multiple correlated data that are observed by sensor nodes densely deployed in a sensor field. We focus on the correlation properties of observation data and try to reduce decoding error by an iterative procedure. An approach to use practical channel codes for more than two correlated data is still not presented. A problem in t...