Performance Analysis and Improvement for VAMP Soft Frequency-Domain Equalizers

Comparison of Frequency Domain Equalizers to Time Domain Equalizers in WCDMA

Frequency Domain Analysis of Adaptive Performance

In this paper, an analysis of the tracking performance of several adaptive algorithms is carried out for the case of model structures with xed pole positions. Such structures have recently been proposed as an eecient generalisation of the common FIR model structure. The focus of this work is to analyse the tradeoo between noise sensitivity and tracking ability in the frequency domain by illustr...

Performance Analysis of Adaptive Blind Equalizers Algorithms

In this paper, we discuss the performance of Blind Equalization algorithms, which can deal with the cases that the input signals are correlated and decrease the filtering error. We describe the algorithm process and analysis the error performance and computational complexity and an example of adaptive blind equalization is given to verify these algorithms. Results and conclusions are made which...

Iterative Frequency-Domain Soft Interference Cancellation for Multicode DS- and MC-CDMA Transmissions and Performance Comparison

Frequency-domain equalization (FDE) based on the minimum mean square error (MMSE) criterion can significantly improve the BER performance of DSand MC-CDMA systems in a severe frequencyselective fading channel. However, since the frequency-distorted signal cannot be completely equalized, the residual inter-code interference (ICI) limits the BER performance improvement. 4G systems must support mu...

On the relation between time-domain equalizers and per-tone equalizers for DMT-based systems

We reconsider MMSE-based time-domain equalizer (TEQ), bitrate maximizing TEQ and per-tone equalizer design for DMT transmission. It is shown that they can all be formulated either as a constrained linear or a separable nonlinear least-squares problem. These least-squares formulations are then turned into generalized eigenvalue problems that allow to establish a remarkably close relationship bet...