In this paper, wireless mobile communication system in the presence of short term fading, long term fading and co-channel interference subjected to short term fading is considered. Desired signal experiences Nakagami-m short term fading and Gamma long term fading, and co-channel interference experiences Nakagami-m short term fading. In interference limited wireless fading channel, the ratio of ...

High-speed communications over the underwater acoustic channel are difficult due to time-varying multipath propagation and Doppler scattering. These phenomena, however, can be effectively used for joint multipath-Doppler diversity of received signals similarly to multipath diversity in a conventional Rake receiver. We present a new signal processing technique for data transmission over fast fad...

In a fading channel, it is well known that the rate of channel variation is dependent on the velocity of the mobile. Consequently, depending on the channel correlation, successive symbols transmitted over the channel can suffer from very similar or possibly very different fading conditions. In this paper, we present an analytical model to evaluate the effect of mobile velocity on the performanc...

Executive Summary This guided research project aim to develop a better understanding of the operational characteristics of an OFDM system under multipath conditions. During the course of the project a Rayleigh fading multipath channel model was developed and used to test the performance of the cyclic guard prefix method of avoiding ISI in OFDM systems. During the next phase of the project, a st...

A narrowband channel model for multipath fading in aeronautical telemetry applications is described. This channel is composed of a line-of-sight signal, a specular reflection whose strength is 20% to 80% that of the line-of-sight signal, and a diffuse multipath component whose power is 10 to 20 dB less than that of the line-of-sight signal. Thus the channel is close to additive white Gaussian n...

In this paper, the multistage multiuser detector for communication over multipath fading channel is considered. The detector consists of a matched filters bank and a linear equalizer whose outputs are diversity combined to produce initial data estimates. Using these data estimates multiuser interference is reconstructed and removed from the output signals of a the matched filters bank. Afterwar...

Body Area Networks (BANs) are wearable wireless sensor networks with a high potential for medical applications. For wireless communication inside the human body, the tissue medium acts as a channel through which the information is sent as electromagnetic (EM) radio frequency (RF) waves. Thus, losses in channel are in the form of fading due to multipath, reflection, diffraction, and scattering. ...

We study the capacity of Nakagami multipath fading (NMF) channels with an average power constraint for three power and rate adaptation policies. We obtain closed-form solutions for NMF channel capacity (with and without diversity) for each power and rate adaptation strategy, and compare them with the additive white Gaussian noise (AWGN) channel capacity. The capacity of a NMF channel is always ...

Successive Interference Cancellation is a promising technique for increasing the capacity of uplink CDMA channels. Fundamental research has shown that in an AWGN channel, the technique can approach the Shannon capacity[1]. However, a multipath channel presents a difficult challenge for interference cancellation, as each multipath component separated by more than a chip time appears to the recei...