Title :
Cooperation in the MAC channel using frequency division multiplexing
Author :
Uppal, Momin ; Host-Madsen, Anders ; Xiong, Zixiang
Author_Institution :
Dept of Electr. Eng., Univ. of Hawaii, Honolulu, HI, USA
fDate :
June 28 2009-July 3 2009
Abstract :
This paper considers cooperation in the low power/SNR regime for the multiple access channel. We assume that transmitters have no channel state information, and consider the outage capacity. We further assume that the nodes operate in half duplex. The nodes are multiplexed by assigning to each node a unique frequency band via frequency division multiplexing (FDM). A node transmits only on this band while listening on the others. We perform outage wideband analysis on FDM based cooperation, and show perhaps surprisingly that FDM loses very little in performance compared to the idealized situation where nodes can operate in full duplex. We then develop practical rateless coding methods for FDM using Raptor codes.
Keywords :
ad hoc networks; codes; frequency division multiplexing; multi-access systems; MAC channel; Raptor codes; ad hoc network; channel state information; frequency division multiplexing; low power signal to noise ratio; multiple access channel; outage wideband analysis; rateless coding method; transmitter; unique frequency band; Ad hoc networks; Channel state information; Decoding; Frequency division multiplexing; Performance analysis; Power engineering and energy; Power engineering computing; Power system modeling; Transmitters; Wideband;
Conference_Titel :
Information Theory, 2009. ISIT 2009. IEEE International Symposium on
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-4312-3
Electronic_ISBN :
978-1-4244-4313-0
DOI :
10.1109/ISIT.2009.5205913
