Paper Info
Title
Performance Analysis of MQAM-OFDM Based WLAN in Presence of Zigbee Interference in AWGN and Rayleigh Fading Channel
Abstract
In this paper we give the performance of MQAM OFDM based WLAN in presence of single and multiple channels Zigbee interference. An analytical model for getting symbol error rate (SER) in presence of single and multiple channel Zigbee interference in AWGN and Rayleigh fading channel for MQAM OFDM system is given. Simulation results are compared with analytical symbol error rate (SER) of the MQAM-OFDM system. For analysis we have modeled the Zigbee interference using the power spectral density (PSD) of OQPSK modulation and finding the average interference power for each sub-carrier of the OFDM system. Then we have averaged the SER over all WLAN sub-carriers. Simulations closely match with the analytical models. It is seen from simulation and analytical results that performance of WLAN is severely affected by Zigbee interference. Symbol error rate (SER) for 16QAM and 64QAM OFDM system is of order of 10-2 for SIR (signal to interference ratio) of 20dB and 30dB respectively in presence of single Zigbee interferer inside the WLAN frequency band for Rayleigh fading channel. For SIR values more than 30dB and 40dB the SER approaches the SER without interference for 16QAM and 64QAM OFDM system respectively.
Year
DOI
Venue
2009
10.1109/ITNG.2009.136
Las Vegas, NV
Keywords
Field
DocType
symbol error rate,analytical model,ofdm system,mqam ofdm,rayleigh fading channel,zigbee interference,average interference power,mqam ofdm system,performance analysis,interference ratio,multiple channel zigbee interference,awgn,fading,interference,oqpsk,power spectral density,signal to noise ratio,ofdm,64qam,signal to interference ratio,quadrature amplitude modulation,performance,16qam,ofdm modulation,wlan
Signal-to-interference ratio,Quadrature amplitude modulation,Rayleigh fading,Computer science,Fading,Computer network,Interference (wave propagation),Additive white Gaussian noise,Orthogonal frequency-division multiplexing,Phase-shift keying
Conference
ISBN
Citations 
PageRank 
978-0-7695-3596-8
1
0.39
References 
Authors
5
2
Name
Order
Citations
PageRank
Minakshmi Roy111.40
H. S. Jamadagni216030.14