A correlated diversity Rayleigh fading (CDRF) channel models inter-diversity fading and signal correlations. This paper considers the multiuser CDRF channel wherein several users transmit information simultaneously using signals with inter-diversity as well as inter-user correlations. Each user employs DPSK modulation. Besides allowing simple noncoherent detection without channel estimation alg...

Abstruct-Multiple trellis-coded modulation (MTCM) of MPSK employs separate designs, which are optimum at high SNR, for the Rayleigh fading channel and the AWGN channel, in order to meet the different design criteria for the two channels. The separate designs are no longer optimum if the channel conditions are interchanged, if the channel is Rician, or if the SNR’s are moderate. In this paper, a...

The third-generation universal mobile telecommunications system (UMTS) uses direct-sequence code division multiple access (DS-CDMA) to transmit data. DS-CDMA is well suited to transmit data over the multipath fading channel. The high signal bandwidth for the WCDMA system (5 MHz) allows the received signal to be split into distinct multipaths with high resolution. For the first generation of UMT...

In this paper, we present first results of ray-tracing simulations of the 60 GHz in-vehicular radio channel. The simulations have been performed with respect to the passenger cabin of a wide-bodied aircraft. A very detailed 3D model of the cabin has been drawn up. Parameters of common materials were taken from literature. Unknown values have been determined by means of free space measurements. ...

Low-density parity check (LDPC) codes of small, realizable size and regular form are analyzed in different multipath fading conditions. The multipath fading conditions vary from uncorrelated channels (with and without channel state information (CSI)) to a correlated land mobile channel at a frequency of 900 MHz. The effects of an external channel interleaver and varying mobile speed in a correl...

The performance of cooperative network can be increased by using relay selection technique. Therefore, interest in relay selection is sloping upward. We proposed two new relay selection schemes based on fuzzy logic for dual hop cooperative communication. These relay selection schemes require SNR (signal to noise ratio), cooperative gain and channel gain as input fuzzy parameters for selection o...

This paper provides a review on the orthogonal frequency division multiplexing (OFDM) and interleave division multiple access (IDMA) by using AWGN and Rayleigh fading channel. OFDM-IDMA is a composite communication system. This system has been receiving significant research attention due to their capability to address the problem like inter symbol interference (ISI) and multiple access interfer...

In this paper we discuss the proper normalization of a fading channel model. Physically, radio channels correspond to passive circuits and follow the energy conservation law. The ratio of the received energy to the transmitted energy is the energy gain of the channel. The representative energy gain is defined as the average energy gain for a signal that is uniformly distributed in time, frequen...

We study the high-SNR capacity of generic MIMO Rayleigh block-fading channels in the noncoherent setting where neither transmitter nor receiver has a priori channel state information but both are aware of the channel statistics. In contrast to the well-established constant block-fading model, we allow the fading to vary within each block with a temporal correlation that is “generic” (in the sen...

In this paper, we analyze the Bit Error Rate (BER) performance of Golden coded Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) system over Rician multipath fading channel. We also compare the performance of the MIMO-OFDM system using Golden code in Rayleigh and Rician multipath fading channels. We discuss the effects of the presence of line-of-sight (LoS) c...