Title :
BER performance evaluation of LMDS with OFDM in different measured channel models
Author :
Laizu, Zebunnessa ; Ahmed, Kazi M.
Author_Institution :
Telecommun. Program, Asian Inst. of Technol., Pathumthani, Thailand
Abstract :
Accurate characterization of communication channel is required to design a reliable and spectrally efficient wireless communication. Channel characteristics of Local Multipoint Distribution System (LMDS) shows that it has multipath propagation. For optimum system design, intersymbol interference (ISI) due to multipaths must be removed. OFDM is an efficient multicarrier modulation scheme used to avoid ISI due to multipath propagation in radio communications. In this paper, we propose and analyze the performance of OFDM for LMDS over different measured channels. Simulation results show that the bit error rate (BER) performance of LMDS with OFDM is better than without OFDM along with forward error correction coding (FEC).
Keywords :
OFDM modulation; error statistics; intersymbol interference; multipath channels; optimisation; radiocommunication; radiowave propagation; telecommunication channels; BER; ISI; LMDS; OFDM; bit error rate; intersymbol interference; local multipoint distribution system; measured communication channel model; multicarrier modulation scheme; multipath propagation; optimum system design; orthogonal frequency division multiplexing; performance evaluation; radio communication; spectrally efficient wireless communication; AWGN; Bit error rate; Forward error correction; Intersymbol interference; Multipath channels; OFDM modulation; Quadrature phase shift keying; Radio frequency; Rician channels; Wireless communication;
Conference_Titel :
TENCON 2004. 2004 IEEE Region 10 Conference
Print_ISBN :
0-7803-8560-8
DOI :
10.1109/TENCON.2004.1414662
