en Performance Evaluation of MB-OFDM based UWB System مخابرات Communication پژوهشي Research <p class="BodyTextofAbstract" style="text-align: left;">This paper investigates the Multi-band OFDM (MB-OFDM) based physical (PHY) layer proposal for IEEE 802.15.3a working group on short-range high data-rate Ultra-wide-Band (UWB) communications. An overview of the MB-OFDM PHY layer architecture with its various parameters is presented and the optimal choice of critical parameters is discussed. Next, we derive the theoretical un-coded Bit Error Rate (BER) of MB-OFDM over the Rayleigh fading channel. Performance results over realistic IEEE UWB channel models are analyzed and compared to a pulsed-OFDM based approach.&nbsp; Although pulsed-OFDM was presented in the literature as an enhancement to the MB-OFDM approach, simulation results showed that with same redundancy-factor, both systems give almost similar BER performance.<!--stripped--><!--stripped--></p> <p class="BodyTextofAbstract" style="text-align: justify;">This paper investigates the Multi-band OFDM (MB-OFDM) based physical (PHY) layer proposal for IEEE 802.15.3a working group on short-range high data-rate Ultra-wide-Band (UWB) communications. An overview of the MB-OFDM PHY layer architecture with its various parameters is presented and the optimal choice of critical parameters is discussed. Next, we derive the theoretical un-coded Bit Error Rate (BER) of MB-OFDM over the Rayleigh fading channel. Performance results over realistic IEEE UWB channel models are analyzed and compared to a pulsed-OFDM based approach.&nbsp; Although pulsed-OFDM was presented in the literature as an enhancement to the MB-OFDM approach, simulation results showed that with same redundancy-factor, both systems give almost similar BER performance.<!--stripped--><!--stripped--></p> Multi-band-OFDM, Pulsed-MB-OFDM, Ultra-wide-Band (UWB) Communications, Frequency Diversity. Multi-band-OFDM, Pulsed-MB-OFDM, Ultra-wide-Band (UWB) Communications, Frequency Diversity. 3 10 http://jiaeee.com/browse.php?a_code=A-10-1-197&slc_lang=en&sid=1 S. Sadough Sadough 1003194753284600759 1003194753284600759 Yes A. Mahmood Mahmood 1003194753284600760 1003194753284600760 No E. Jaffrot E. Jaffrot 1003194753284600761 1003194753284600761 No Pierre Duhamel Duhamel 1003194753284600762 1003194753284600762 No