| In this paper we present an adaptive blind receiver for asynchronous direct sequence code division multiple access (DS-CDMA) communication over multipath channels. The algorithm can handle both multiuser interference (MUI) and intersymbol interference (ISI) by the use of a twofold spreading together with some spatial over-sampling. It is based on a blind virtual channel identiication using th...

Tracking performance of the I-Q carrier recovery loop for BPSK signal in bandlimited channel with multipath interference is analysed. The multipath fading channel is characterised by the Rummler’s model (a simplified three-ray model) for line-of-sight digital radio system. A closed-form expression for the phaseerror variance related to the multipath interference, intersymbol interference and ch...

This paper1 present an interference suppression using subband adaptive array (SBAA) for space-time block coding (STBC) with multiple input multiple output (MIMO) multirate multicode code division multiple access (CDMA) under the frequency selective fading (FSF). The proposed scheme has a flexible configuration which allows base station (BS) to dynamically adapt to multirate transmission request...

– Equalization in the time domain is a wellknown technique for combating intersymbol interference (ISI) in frequency selective channels. In this paper we derive the general structure of the linear zero forcing (ZF) equalizing filters for multiple input multiple output (MIMO) communication systems with more outputs than inputs. These filters are finite impulse response (FIR) filters in general a...

Chaos-based communications systems have shown to be of potential interest in some kinds of dispersive channels. In this paper we analyze the behavior of a class of chaos-based coded modulations (CCM’s) in channels with time-invariant intersymbol interference (ISI). We use the ISI distance spectrum of the CCM’s to calculte bounds for the bit error rate (BER), and we provide the analytical condit...

To achieve good efficiency in a space-based radio transmitter, its final amplifier must be operated near the saturation point, in its nonlinear region. Because of strict band limitations, this nonlinear operation is combined with the problem of intersymbol interference. Normally, these problems are addressed using a combination of equalization and power back-off, resulting in reduced power effi...