OC addresses both the problems of multipath fading
and the effect of interference.
In the paper, Reed-Solomon (RS) code, Convolutional code (CC) and concatenation RS-CC with interleaver are used to improve the performance of MIMO-OFDM system under multipath fading
channels like AWGN in conjunction with Rayleigh fading channel
To achieve the goal of favorable trade-off between performance in severe multipath fading
channel and complexity of signal processing, the single-carrier frequency-domain equalization (SC-FDE) has recently attracted increased interest because of its similar performance, efficiency, and low signal processing complexity advantages as OFDM, and in addition it is less sensitive than OFDM to radio frequency (RF) impairments such as power amplifier nonlinearities.
Where hSR1, hSR2 and hSD are the complex Rician multipath fading
channels of source to relay1, source to relay2 and source to destination links respectively.
In our study, for the desired signal, the Rician distribution as a multipath fading
effect is considered.
To increase the transmission capacity and improve the multipath fading
, the correlation coefficient should be small.
From all of simulation results, it is obvious that modified MMSE equalizer is optimal that performs improved BER in MIMO wireless multipath fading
channels among all of the equalizers presented in this paper.
To combat multipath fading
effects, especially in fast fading channels, many communication systems use burst mode of transmission .
can only occur if this refractivity gradient in the atmosphere varies with height .
better reliability and/or higher throughput) in multipath fading
In multipath fading
environments we also propose the improved method which selects the route referring to the received power information added to RREQ in each hop.
In most wireless channels, antenna diversity is a practical, effective and widely used technique for reducing the effect of multipath fading