this paper, we propose an adaptive subband array with DFT filter banks for multipath fading mitigation in land mobile communications. The purpose is to improve convergence of the desired signal equalization as well as to effectively suppress the interferers. A DFT filter bank transforms

control station for certain instant of time. Possible causes of link loss in this case are due to aircraft maneuvering and fading. So analysis of various fade mitigation techniques as well as bit error rate (BER) and signal to noise (SNR) ratio performance comparison between selection diversity, equal

Abstract|Forward error correction coding, space diver-sity, power control, and rate control techniques are con-sidered methods for mitigating fading degradation. We investigate the relative eectiveness of these techniques by comparing the minimum E

In this paper, we propose subband adaptive array processing for mitigation of both inter-symbol interference (ISI) and cochannel interference (CCI) in digital mobile communications. Subband adaptive array processing employs filter banks in a front-end to an adaptive array receiver. By decomposing

information transfer, an effective means of reducing the fading effect on wireless channel must be found. Diversity scheme has been observed as an effective means of mitigating the effect of fading. In this paper, space transmission diversity technique was applied to combat fading effect on wireless channel

The demand for increased bandwidth for such services as satellite tv-on-demand has lead to pressure to increase spectrum efficiency and open higher frequencies to commercial exploitation. Fade mitigation techniques such as adaptive transmit power control (ATPC) have been proposed as ways

Abstract not found

Abstract—Local multipoint distribution service (LMDS) is a broadband wireless access technology that operates at microwave frequencies above 25 GHz. However, severe attenuation due to excessive rain in tropical regions presents a major challenge for achieving reliable communication over such frequencies. To overcome this problem, cell-site diversity (CSD) can be deployed in cellulartype LMDS networks. In this paper, we address the problem of reliable communication for LMDS networks in heavy rain regions by proposing a fuzzy weight controller based cell-site diversity (FWC-CSD) scheme. Rain cells are randomly simulated in an LMDS network to analyze the system performance using the proposed FWC-CSD scheme. Simulation results show that the proposed scheme yields improved performance in terms of average outage probability and throughput while maintaining the overall quality of service. 1.

with some considerations for its application in assessing performance of radio links. An example of use of the model in evaluation of fade mitigation schemes involving adaptive M-QAM modulation and cell-site diversity on two short converging links operating at 30 GHz is given.

When the mechanisms of fading channels were first modeled in the 1950s and 1960s, the ideas were primarily applied to over-thehorizon communications covering a wide range of frequency bands. The 3–30 MHz high-frequency (HF) band is used for ionospheric communications, and the 300 MHz–3 GHz ultra