In this paper, the diversity reception with correlated Rayleigh fading signals will be investigated . Results will be evaluated by converting two correlated Rayleigh fading signals into another two independent Rayleigh fading signals using transformation matrix. These results show that Optimum transformation matrix F=1 is better than F = 2 / 2 which is the elements of the optimum transformation...

Space-time trellis codes provide both diversity gain and coding gain. There are two different design criteria proposed for spacetime trellis codes (STTCs), namely the rank and determinant criteria (RDC) and the Euclidean distance design criteria (EDC). In this paper, we present the performance of STTCs over Nakagami fading channels. Our results show that the STTCs designed for Rayleigh fading c...

Performances of cellular networks over κ-μ shadowed fading with long-term shadowing has been studied in the existing literature. However, the impact of κ-μ shadowed fading with instantaneous shadowing on performances of cellular networks is unknown. Therefore, this letter analyzes the downlink coverage probability of a Poisson network with double shadowed fading which is composed of a large-sca...

In cognitive relay networks (CRNs), all of previous works have considered symmetric fading channels. However, in practical wireless propagation scenarios, it is likely that the different channels associated with secondary user (SU) and primary user (PU) may undergo different fading characteristics. Therefore, in this paper, we assume that the channels of the secondary network (SU-source→SU-rela...

In this paper, we investigate the bit error rate (BER) performance of Orthogonal frequency division multiplexing (OFDM)-Binary phase shift keying (BPSK) OFDM-Quadrature phase shift keying (QPSK), OFDM-Quadrature amplitude shift keying (QAM) over different fading channels. The performance of transmission modes are evaluated by calculating the BER versus signal to noise ratio (SNR) under the Addi...

PERFORMANCE ANALYSIS OF DPSK/DS-CDMA SIGNALS OVER NAKAGAMI RADIO FADING CHANNELS by Ali A. Jamous Chairman: Dr. Ibrahim Ghareeb Direct sequence (DS) based code division multiple access (CDMA) with differential phase shift keying (DPSK) modulation is an active area of research and has taken on a significant role in recent cellular and personal communication systems. Two basic problems are of maj...

We consider a layered approach to source coding that minimizes expected distortion when side information is available through a fading channel. Specifically, we assume a Gaussian source encoder whereby the decoder receives a compressed version of the symbol at a given rate, as well as an uncompressed version over a separate side-information channel with slow fading and noise. The decoder knows ...

In this paper we propose a new composite fading model which assumes that the mean signal power of an η−μ signal envelope follows an inverse gamma distribution. The inverse gamma distribution has a simple relationship with the gamma distribution and can be used to model shadowed fading due to its semi heavy-tailed characteristics. To demonstrate the utility of the new η−μ / inverse gamma composi...

Spectrum sensing is the key component of cognitive radio technology. Spectrum sensing is a tough task because of shadowing, fading, and time-varying nature of wireless channels. However, detection is compromised when a user experiences shadowing or fading effects. In such cases, user cannot distinguish between an unused band and a deep fade. Thus, cooperative spectrum sensing is proposed to opt...

Since the performance metrics of digital communication systems over composite multipath/ lognormal fading channels is intractable, a mixture gamma (MG) fading model is used to approximate Nakagami-lognormal (NL) fading model. By using MG fading model, the ergodic capacity of dualhop semi-blind amplify-and-forward relaying systems is investigated over independent non-identical composite NL fadin...