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Frequency domain simulator for mobile radio channels and for IEEE 802.16-2004 standard using measured channels

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2 Author(s)
Khokhar, K. ; Sch. of Eng., Durham Univ., Durham ; Salous, S.

Two radio channel simulators based on the time variant frequency transfer function have been implemented using digital signal processing techniques in SIMULINK. The first simulator uses a two ray channel model to determine the number of taps per coherent bandwidth of the channel by comparing the bit error rate (BER) with the tapped delay line model for differential quadrature phase shift keying. The results show that ten taps per coherent bandwidth are appropriate for a very close approximation of the channel. The second simulator utilises real channel measurements to estimate the BER for the IEEE 802.16 -2004 wireless metropolitan area network orthogonal frequency division-multiplexing standard with 256 carriers. Channel measurements at three frequencies in the 2-6-GHz frequency band in rural/semi rural environment demonstrate the simulator and relate the BER performance of the standard to the frequency selectivity of the channel.

Published in:

Communications, IET  (Volume:2 ,  Issue: 7 )

Date of Publication:

August 2008

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