In the context of coded transmission over intersymbol interference channels we investigate a bidirectional list-sequential equalizer (BI-LISS) suitable for turbo schemes. Especially for channels with an unmanageable high number of states for a trellis based APP equalization this sequential algorithm shows almost optimal performance with much smaller complexity. Generally, the list-sequential (L...

A recursive blind equalizer is presented that directly estimates the transmitted symbols of multiple cochannel signals in the presence of ISI. The algorithm exploits shift structure present in the data model and the finite alphabet property of the signals. The proposed method possesses a separation property that allows the symbol sequences for each user to be estimated independently of the othe...

Figure 1: Comparison of CMA and CPL blind equalizer performance (nonlinear channel) Figure 2: Comparison of CMA and CPL blind equalizer performance (linear channel) Abstract Canonical piecewise linear structures provide a desirable compromise between the approximation ability of nonlinear models and the eeciency and theoretical accessibility of the linear domain, and they reduce the parameter s...

Adaptive channel equalization without a training sequence is known as blind equalization [1]-[11]. Consider a complex baseband model with a channel impulse response of cn. The channel input, additive white Gaussian noise, and equalizer input are denoted by sn, wn and un, respectively, as shown in Fig. 1. The transmitted data symbols, sn, are assumed to consist of stationary independently and id...

In this work, we derive a equivalent delay-Doppler channel matrix of the Orthogonal Time Frequency Space (OTFS) modulation that has not been studied in previous literature. It has the similar structure as the banded channel matrix of OFDM systems over rapidly time-varying channels. However, the band in the equivalent channel matrix will no longer spread with the increase of the Doppler spread o...

In an iterated two-person game, for instance prisoners dilemma or the snowdrift game, there exist strategies that force the payoffs of the opponents to be equal. These equalizer strategies form a subset of the more general zero-determinant strategies that unilaterally set the payoff of an opponent. A challenge in the attempts to understand the role of these strategies in the evolution of animal...

This paper proposes an iterative receiver derived from recent advances in narrowband turbo equalization for the multicode transmission scheme of the downlink of DSCDMA systems with long scrambling sequences. The proposed scheme is based on a chip-rate linear equalizer exchanging soft information on the composite multiuser signal with the channel decoder in an iterative process. When all spreadi...

Equalization of room impulse responses is an attractive approach for dereverberation of speech signals in a hands-free scenario. In this contribution we address the choice of the delay which has to be introduced in leastsquares equalization approaches for a maximum amount of dereverberation. Since designing one equalizer (EQ) for each possible delay and choosing the best one is computationally ...

For high data rate ultra wideband communication system, performance comparison of Rake, MMSE and Rake-MMSE receivers is attempted in this paper. Further a detail study on Rake-MMSE time domain equalizers is carried out taking into account all the important parameters such as the effect of the number of Rake fingers and equalizer taps on the error rate performance. This receiver combats inter-sy...

Equalization of room impulse responses is an attractive approach for dereverberation of speech signals in a hands-free scenario. In this contribution we address the choice of the delay which has to be introduced in leastsquares equalization approaches for a maximum amount of dereverberation. Since designing one equalizer (EQ) for each possible delay and choosing the best one is computationally ...