Eliminating inter-BSS co-channel interference by MC-CDMA in WLANs

Conference item

Multi-Carrier Code Division Multiple Access (MC-CDMA) was proposed to improve capacities of wireless networks. Instead of increasing the data transmission rates of wireless links, we propose to assign independent data streams obtained by MC-CDMA for transmitting up-link and down-link traffic separately in order to eliminate the hidden-node and exposed-node problems between co-channel BSSs in WLANs. Simulations show that our scheme can improve network throughputs by 106% in an exposed-node scenario and by 113% in a hidden-node scenario. We also consider the hardware and MAC requirements of our scheme under different settings of physical carrier sensing range. We believe this is a first paper in the literature to assign MC-CDMA generated data streams in WLANs so as to mitigate the hidden-node and exposed-node problems. © 2007 IEEE.

Authors: Ng, P; Edwards, D; Liew, S; IEEE

• Publication status: Published
• Host title: 2007 IEEE WIRELESS COMMUNICATIONS and NETWORKING CONFERENCE, VOLS 1-9
• Pages: 2169-2173
• Publication date: 2007-01-01
• DOI: 10.1109/WCNC.2007.405
• ISSN: 1525-3511
• ISBN: 9781424406586
• Keywords: exposed-node; channel assignments; capacity; MC-CDMA; hidden-node; WLANs; wireless networks