Frequency shift based multiple access interference canceller for DS-CDMA systems

Frequency shift based multiple access interference canceller for multirate UMTS-TDD systems

Abstract— Direct Sequence Spread Spectrum (DS-SS) signals exhibit cyclostationary properties which imply a redundancy between frequency components separated by multiples of the symbol rate. In this paper we present a Multiple Access Interference Canceller that explores this property and applies to UMTS-TDD. This frequency domain canceller operates in the spreaded signal in such way that the int...

Erratum: Multi-sensor frequency domain multiple access interference canceller for DS-CDMA systems

Bit Error Performance for Asynchronous Ds Cdma Systems Over Multipath Rayleigh Fading Channels (RESEARCH NOTE)

In recent years, there has been considerable interest in the use of CDMA in mobile communications. Bit error rate is one of the most important parameters in the evaluation of CDMA systems. In this paper, we develop a technique to find an accurate approximation to the probability of bit error for asynchronous direct–sequence code division multiple–access (DS/CDMA) systems by modeling the multipl...

Iterative frequency-domain ICI canceller for improving DS-CDMA signal transmission performance

Abstract In direct sequence code division multiple access (DS-CDMA), frequency-domain equalization (FDE) based on minimum mean square error (MMSE) criterion can be applied to exploit the channel frequency-selectivity and therefore can replace the conventional rake combining with a much improved bit error rate (BER) performance. For a small spreading factor, however, the residual inter-chip inte...

An Adaptive Multistage Parallel Interference Canceller for CDMA Systems over Frequency Selective Fading Channels

-In this paper, a hit inversion (BI) procedure in previous works is furtherinvestigated over multipath frequency selective fading' channels for DS-CDMA communication systems. Moreover, after the BI procedure performed with partial parallel interference, cancellation (PPIC) schemes where the partial cancellation weight (PCW) is adapted by the least mean square (LMS) adaptive filtering algorithm,...