Bandwidth Efficient Orthogonal Frequency Division Multiplexing (BEOFDM) Modem Modeling and Simulation LU Xuanmin,1ZainulABIDEEN, WANG Yi (Schoo of Electronics and Information, Northwestern Polytechnical University, Xi’an 710072, China) Abstract: 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. Keywords: OFDM, BEOFDM, BER, WLAN, QAM 1 INTRODUCTION During the past ten years, communication industry has grown up by the orders of magnitude, people want to stay in touch with each other without the bound of distance, thanks to communication industry, which made it possible for the people to communicate with each other no matter where they are living in the world and how, many distant they are. Communication