Improved low-density spreading (LDS) code designs based on the Gaussian separability
criterion are conceived. We show that the bit error rate (BER) hinges not only on the …

We consider adaptive space-time processing for wireless receivers in CDMA networks.
Currently, the 2D RAKE is the most widely used space-time array-processor which combines …

In this paper, we propose new techniques for CDMA/MIMO systems that employ multiple
spreading codes. Rather than assigning each transmit antenna a different spreading …

The third generation cellular communications standard (UMTS) will be based on wideband
code division multiple access technology. In this paper the conventional RAKE receiver …

This paper describes a spread-spectrum downlink RAKE receiver that computes data
detection in the frequency domain. We assume a pilot signal is transmitted with data signals …

As the channel frequency selectivity becomes severer, the bit error rate (BER) performance
of direct sequence spread spectrum (DSSS) signal transmission with rake combining …

The use of coherent modulation for the uplink of wireless CDMA systems requires pilot
signals which contribute to the interference seen by other users. In previous work we …

Channel estimation is an integral part of standard adaptive receiver designs used in digital
wireless communication systems. In this article, commonly used approaches to channel …

Abstract Code Division Multiple Access (CDMA) and multiple input multiple output-(MIMO-)
CDMA systems suffer from multiple access interference (MAI) which limits the spectral …

The performance of a DS-CDMA system over a multipath fading channel is evaluated. A
RAKE receiver is employed to combat channel distortion introduced by multipath and …