Bandwidth Efficient Orthogonal Frequency Division Multiplexing(BEOFDM)Modem Modeling and Simulation
Radio frequency band is becoming more and more invaluable due to increasing demand of bandwidth in wireless communication services.In Conventional OFDM there is lot of wastage of bandwidth due to guard interval.The purpose of guard interval is to overcome the effects of inter-symbol interference caused by multipath.The Paper aimed to reduce this guard interval to achieve much improved bandwidth efficiency in terms of improved data rate and BER performance.For this purpose,A one tap feed forward equalization technique has been implemented to overcome the multipath effects and the intersymbol interference (ISI) caused by it.A static Rayleigh channel is modelled to observe the effects of intersymbol interference caused by the multipath.First the conventional OFDM modem is simulated according to the IEEE 802.11a standard and then the proposed equalization technique was implemented to observe the error free transmission without the overhead of guard bits.The new proposed OFDM technique achieves higher information rate and lower symbol error rate as compared to the conventional OFDM.The paper contains the procedural steps involved in the simulation of OFDM in Simulink and gives a comparison between the results obtained after simulating conventional and bandwidth efficient OFDM.
OFDM BEOFDM BER WLAN QAM
LU Xuanmin ZainulABIDEEN WANG Yi
Schoo of Electronics and Information,Northwestern Polytechnical University,Xi’an 710072,China
国内会议
贵阳
英文
1-9
2013-05-01（万方平台首次上网日期，不代表论文的发表时间）