Title :
Proportional Time Sharing with Frame Size Adaptation for MB-OFDM based UWB WPANs
Author :
Masazade, Engin ; Keskinoz, Mehmet ; Gurbuz, Ozgur
Author_Institution :
Sabanci Univ., Istanbul
Abstract :
In this paper, we propose a new method for estimating the instantaneous bit error rate (iBER) of the Multi Band OFDM UWB communications based on the distribution of received signal to noise ratio on each subcarrier. In order to maximize the link throughput, frame sizes of the link layer are dynamically and optimally tuned based on this iBER estimates. Next, we implement an opportunistic channel access scheme in the context of IEEE 802.15.3 WPAN superframe structure. In this method, individual links´ time allocations are determined proportionally with respect to their link efficiencies. Simulation results show that the proposed link and access schemes based on iBER estimates enhance the total network throughput significantly.
Keywords :
OFDM modulation; error statistics; personal area networks; ultra wideband communication; IEEE 802.15.3 WPAN; UWB WPAN; frame size adaptation; iBER; instantaneous bit error rate; multi band OFDM UWB communication; opportunistic channel access scheme; orthogonal frequency division multiplexing; proportional time sharing; ultra wideband communication; Bandwidth; Bit error rate; Fading; HDTV; OFDM; Personal area networks; Physical layer; Throughput; Time division multiple access; Time sharing computer systems;
Conference_Titel :
Systems, Applications and Technology Conference, 2006. LISAT 2006. IEEE Long Island
Conference_Location :
Long Island, NY
Print_ISBN :
978-1-4244-0300-4
Electronic_ISBN :
978-1-4244-0300-4
DOI :
10.1109/LISAT.2006.4302654
