The basic concept of diversity; where two or more inputs at the receiver are used to get uncorrelated signals. aim this paper is an attempt compare some possible combinations diversity reception and MLSE detection techniques. Various combining techniques can be distinguished: Equal Gain Combining (EGC), Maximal Ratio (MRC), Selection Switching (SS).The simulation results shows that MRC give bet...

In this paper, the performance of composite microscopic and macroscopic diversity combining over concatenated double error correcting BCH inner codes and majority-logic-like vector symbol (MLLVS) codes within lognormally shadowed Rayleigh fading channels are analyzed. In the communication model, CPM is used with microscopic combining at the receiving stations before outer code decoding and macr...

Objectives . Theoretical studies of the waveguide properties interfaces between nonlinear optical and graded-index media are important for application in optoelectronics. Waveguides combining layers with different seem to be most promising, since they can matched optimal characteristics using a wide range control parameters. The paper aims develop theory composite optically gradedindex waveguid...

Efficient bandwidth utilization is paramount in wireless communication systems, particulary in fading environments, since fading is one of the major constraints that impair communication in wireless systems. The bandwidth efficiency of a wireless communication system can be enhanced significantly by employing power and modulation adaptation policies with diversity combining gain. In this work, ...

Cooperative Diversity can be used by wireless nodes to take the benefit of broadcast nature and inherent spatial diversity of wireless channel to relay messages for each others. This helps to propagate redundant signals over multiple paths, which can be used to combat the channel noise and fading effects. We investigate the use of packet combining in cooperative diversity scenario. In our appro...

In this article, we have studied the statistical properties of the instantaneous channel capacity of spatially correlated Nakagami-m channels for two different diversity combining methods, namely maximal ratio combining (MRC) and equal gain combining (EGC). Specifically, using the statistical properties of the instantaneous signal-tonoise ratio, we have derived the analytical expressions for th...

A blind joint estimator for multipath diversity and PN code timing error is proposed in this paper for direct-sequence spread-spectrum signaling on a frequency-selective fading channel. In the multipath diversity combiner, a modi ed known modulus adaptive (KMA) algorithm is used to cope with time-varyingmultipath e ects and to perform multipath diversity combining in the blind mode. In the code...

The complete 3D nonlinear dynamic problem of extensible, flexible risers conveying fluid is considered. For describing the dynamics of the system, the Newtonian derivation procedure is followed. The velocity field inside the pipe formulated using hydrostatic and Bernoulli equations. The hydrodynamic effects of external fluids are taken into consideration through the nonlinear drag forces in var...