The performance of an OFDM system is affected by parameters such as carrier frequency offset and phase noise. In the presence of such parameters the performance of OFDM system degrades. Under Rayleigh fading environment the performance fluctuates depending on the signal strength. In this paper the performance of an OFDM system is studied in the presence of Rayleigh fading channel. Results show ...

In this study, Enhanced Data rate for GSM Evolution (EDGE) mobile communication system is analyzed and modeled assuming to operate in both Additive White Gaussian Noise (AWGN) channel and Rayleigh fading channel. A MATLAB software package is developed to simulate extensively the EDGE system. The system analysis takes into account channel coding, modulation type, interleaving and burst building,...

Abstract – We consider a single-user, point-to-point communication system with transmit and receive antennas with independent flat Rayleigh fading between antenna pairs. The mutual information of the multi-input/multioutput (MIMO) channel is maximized when the transmitted symbol vector is a Gaussian random vector with covariance matrix . The optimal depends on how much channel state information...

--In this paper Bit Error Rate performance of BPSK modulation and OFDM -BPSK System over Rayleigh fading channel is analyzed. The performance of BER of BPSK over AWGN and Rayleigh channel is compared. OFDM is a orthogonal frequency division multiplexing to reduce intersymbol interference problem. Simulation of BPSK signals is carried with both AWGN and Rayleigh channel. Finally simulations of O...

In the early years of information theory, mutual information was defined as a random variable, and error probability bounds for communication systems were obtained in terms of its probability distribution. We advocate a return to this perspective for a renewed look at information theory for general channel models and finite coding blocklengths. For capacityachieving inputs, we characterize the ...

Abstract—We present an new method for the analytical calculation of the error probability in a Rayleigh fading channel with correlated fading amplitudes. Even though the method can be applied for more general problems, we restrict ourselves on the investigation of a multicarrier CDMA transmission. The frequency correlation between the fading amplitudes of the carriers is given by the delay powe...

In this paper, powerful coding techniques for differential space-time modulation (DSTM) over Rayleigh flat fading channels and noncoherent demodulation without channel state information at the receiver are investigated. In particular, multilevel coding (MLC), bit-interleaved coded modulation (BICM), and so-called hybrid coded modulation (HCM) are devised and compared using capacity arguments. F...

An assessment of spectrum efficiency for a microcellular land mobile radio system is presented by considering the desired signal as (fast) Rician fading with (slow) lognormal shadowing and co-channel interfering signals as uncorrelated (fast) Rayleigh fading superimposed over (slow) lognormal shadowing. Spectrum efficiency is defined in terms of reuse distance, Le., cluster size, traffic intens...

V-BLAST algorithm is an attractive simple solution for the Rx processing of a MIMO system. This paper presents an analytical analysis of some aspects of the algorithm performance over a flat-fading Rayleigh channel. Closed-form rigorous analytical expression for the joint outage probability and its PDF at the 1 detection step are derived for the case of 2xn system. Corresponding distribution mo...

Cognitive radio technology has been proposed as a viable solution to the spectrum scarcity problem faced by world today. The technology allows opportunistic spectrum access to the licensed frequency band by unlicensed user without causing any harmful interference to the licensed primary user. In this paper, ergodic channel capacity is investigated for underlay spectrum sharing system under maxi...