The Bit Error Rate (BER) is a key parameter of the Quality of Service (QoS) for engineers and designers of digital communication systems and networks. At the present time, a set of models and methods are exist for calculating the BER. But these methods are complex and require large computing cost. In this paper, we provide a new model for calculating the BER. This model simplifies the procedure...

A novel method of estimating the BER performance of finite length turbo codes in a binary AWGN channel is proposed. We consider the asymptotes of BER performance at low and high Eb N0 resulted from the small and large extrinsic values, respectively. The BER performance curve transitions between two asymptotes in the waterfall region, where the transition probability is approximately obtained by...

This paper introduces a method that computes an estimation of the bit error rate (BER) based on the RAKE receiver soft output only. For this method no knowledge is needed about the channel characteristics nor the precise external conditions. Simulations show that the mean error of the estimation is below 2%, with only a small variance. Implementation issues for a practical use of the method are...

Recent advances in computer processing speeds have resulted in a parallel processing environment in which the interconnection networks themselves are the limiting factor in terms of performance. One approach to circumvent this limitation is to arrange processing nodes in a hierarchical manner. In a hierarchical network, nodes are arranged in clusters of one or more nodes and these clusters are ...

We consider the design and adaptation of a linear equalizer with a finite number of coefficients in the context of a classical linear intersymbol-interference channel with Gaussian noise and a memoryless decision device. If the number of equalizer coefficients is sufficient, the popular minimum mean-squared-error (MMSE) linear equalizer closely approximates the optimal linear equalizer that dir...

In this paper, a Bit Error Rate (BER) analysis is presented for Multiple-Input Multiple-Output (MIMO) schemes in the 3GPP Long Term Evolution (LTE) system. Analytical expressions for the average BER of the system are derived over flat Rayleigh fading channels for two different MIMO schemes as defined in LTE, assuming M-ary quadrature amplitude modulation (M-QAM) schemes and are evaluated numeri...

In this paper, the recently introduced optimisation strategy, imperialist competitive algorithm (ICA) is used to design an optimal antenna array which minimises the error probability for binary phase shift keying modulation, called minimum bit error rate (MBER) beamforming. ICA is used to deal with the high complexity and high dimensionality of this challenging problem which can not be easily s...

This paper presents a methodology to calculate the bit-error rate for the data transmission in the upstream direction of Gigabit PON systems. In traditional optical receivers, the signal consists of a continuous bit stream. In the upstream direction of a PON however, the signal consists of a succession of packets with varying amplitudes. Hence the receiver needs to quickly extract the decision ...

Non-linear distortion of OFDM signals can significantly increase the receiver BER. Currently, distortion analyses rely on simulation, not yielding insight into the problem, or apply to specific non-linearities only. In this paper, general analytic results are presented on the errors resulting from distortion. The results are applicable to smooth non-linear distortion of an OFDM signal, which is...

--In OFDM systems, Fast Fourier transform (FFT) is used for frequency translation, and recently Discrete Wavelet Transform (DWT) has replaced FFT for frequency translation. 16-QAM (Quadrature amplitude modulation) scheme has been used in the OFDM system for both DWT and FFT based models. This work presents a modified OFDM system that is based on a low complexity interleaving process which is ap...