This paper derives exact expressions for the level crossing rate and average fade duration of equal-gain and maximal-ratio combiners for the α − μ (Generalized Gamma) fading Distribution, assumingM unbalanced, non-identical, independent diversity channels. The analytical results are thoroughly validated by reducing the general case to some particular cases (Nakagami-m and Weibull), for which th...

The issue of channel state information at the transmitter is investigated using MIMO channel measurements and by deriving expressions for ergodic and outage capacity in a Rayleigh fading channel. Expressions for bit error rates in Rayleigh fading channels are also presented for orthogonal space time block codes and for beamforming where the bit error rates in the beamforming case follow from th...

Recently we have proposed a maximum-likelihood iterative algorithm for estimation of parameters of the Nakagamim distribution. This technique performs better than state of art estimation techniques for this distribution. This could be of particular use in low-data/block based estimation problems. In these scenarios, the estimator should be able to give accurate estimates (in the mean square sen...

This paper investigates a natural generalization of the κ-μ fading channel in which the line-of-sight (LOS) component is subject to shadowing. This fading distribution has a clear physical interpretation, good analytical properties and unifies the one-side Gaussian, Rayleigh, Nakagami-m, Ricean, κ-μ and Ricean shadowed fading distributions. The three basic statistical characterizations, i.e. pr...

In this paper we propose a new shadowed Rice model for land mobile satellite channels. In this model the amplitude of the line-of-sight is characterized by the Nakagami distribution. The model provides closed-form mathematically-tractable expressions for the fundamental channel statistics such as envelope probability density function and envelope-squared moment generating function. The model is...

In this paper we give a comparative analysis of decoding algorithms of Low Density Parity Check (LDPC) codes in a channel with the Nakagami distribution of the fading envelope. We consider the Progressive Edge-Growth (PEG) method and Improved PEG method for the parity check matrix construction, which can be used to avoid short girths, small trapping sets and a high level of error floor. A compa...

We investigate outage performance of fixed-gain and variable-gain amplify-and-forward (AF) full-duplex (FD) relaying systems under residual loop-interference (LI) in non-identical Nakagami-m fading channels. New exact outage probability expressions are derived analytically in a single-integral form by using the cumulative distribution function approach. Moreover, tight lower-bound and asymptoti...

The probability of error for NFSK with square law combining for diversity correlated Nakagami channels is analyzed. The closed for of expression using characteristic function is derived. The average SNR per branch is considered to be distinct. The effect of different noise powers for various diversity orders and fading channel parameters on probability of error and unequal SNR distribution is b...

This paper presents the average symbol error rates (SERs) of the 16-ary phase shift keying (16PSK), 16ary amplitude phase shift keying (16APSK) and 16ary quadrature amplitude modulation (16QAM) with L-fold maximal ratio combining (MRC) and selection combining (SC) space diversity receptions over Nakagami-m fading channels. Numerical results manifested error performance improvement when Lfold MR...

Subcarrier mapping (SCM) is considered to be crucial for capacity-maximization in orthogonal frequency division multiplexing (OFDM) relaying networks and has been investigated extensively. However, no study has examined its exact or approximate close-form analysis under Nakagami-m fading. This paper considers the ordered subcarrier pairing schemes, i.e., worst-to-best (WTB) SCM and best-to-best...