In classifier combining, one tries to fuse the information that is given by a set of base classifiers. In such a process, one of the difficulties is how to deal with the variability between classifiers. Although various measures and many combining rules have been suggested in the past, the problem of constructing optimal combiners is still heavily studied. In this paper, we discuss and illustra...

In this paper, we analyze the impact of nonlinear high-power amplifier (HPA) on the performance of cooperative network based on orthogonal frequency division multiplexing combined with time-division multiplexing (OFDM/TDM) using minimum mean-square-error frequency-domain combining (MMSE-FDC) in a frequency-selective fading channel. We design a novel MMSE-FDC weights while taking into account th...

Wireless communication demands high data rates with great quality and accuracy but such requirements can only be achieved if the signal could be received without being affected by the channel impairments. In these entire impairments multipath fading is the major problem in achieving reliable wireless transmission. It is due to the combination of constructive and destructive multipath signals re...

This paper explores antenna diversity issues for Orthogonal Frequency Division Multiplexing (OFDM) in frequency flat and selective fading environment using three combining methods – maximal ratio combining (MRC), equal gain combining (EGC), and selection combining (SC). For OFDM, diversity combining can be done on individual subcarriers (narrowband combining) or on the entire OFDM symbol (wideb...

The severity of fading on mobile communication channels calls for the combining of multiple diversity sources to achieve acceptable error rate performance. Traditional approaches perform the combining of the different diversity sources using either the conventional selective diversity combining (CSC), equal-gain combining (EGC), or maximal-ratio combining (MRC) schemes. CSC andMRC are the two e...

The next generation wireless communication systems are expected to support high speed data trans mission However associated with high transmission rates is the problem of multipath inter symbol interference ISI due to frequency selective fading Decision feedback equalization DFE and antenna diversity combining are two practical techniques for combating multipath ISI In this paper we in vestigat...

The severity of fading on mobile communication channels calls for the combining of multiple diversity sources to achieve acceptable error rate performance. Traditional approaches perform the combining of the different diversity sources using either: the Conventional Selective diversity combining (CSC), Equal-Gain combining (EGC), or Maximal-Ratio combining (MRC) Schemes. CSC and MRC are the two...

The maximal-ratio combining (MRC) scheme is investigated in detail. Other diversity combining schemes, such as selection combining (SC) and equal gain combining (EGC) are outperformed by MRC in the case of coherent communications. First, the case of M independent fading channels is considered. The output signal-tonoise ratio (SNR) expression is derived, and an expression for the bit error rate ...

 A nonlinear transmitter-based multiple access interference (MAI) cancellation technique, Tomlinson-Harashima transmitter precoding (THP), is proposed for Direct Sequence (DS) Code-Division Multiple Access (CDMA) systems with or without multipath fading. This zero forcing (ZF)-based transmitter precoding method minimizes the mean square error at the receiver. It is suitable for the downlink si...