|
iDEA: Drexel E-repository and Archives >
Drexel Academic Community >
College of Engineering >
Department of Electrical and Computer Engineering >
Faculty Research and Publications (ECE) >
Transmission capacity of wireless ad hoc networks with successive interference cancellation
Please use this identifier to cite or link to this item:
http://hdl.handle.net/1860/2554
|
| Title: | Transmission capacity of wireless ad hoc networks with successive interference cancellation |
| Authors: | Weber, Steven P.
Andrews, Jeffrey G.
Yang, Xiangying
de Veciana, Gustavo |
| Keywords: | Ad Hoc Networks
Successive Interference Cancellation
Transmission Capacity (TC) |
| Issue Date: | Aug-2007 |
| Publisher: | Institute of Electrical and Electronics Engineers (IEEE) |
| Citation: | IEEE Transactions on Information Theory, 53(8): pp. 2799-2814. |
| Abstract: | The transmission capacity (TC) of a wireless ad hoc
network is defined as the maximum spatial intensity of successful
transmissions such that the outage probability does not exceed
some specified threshold. This work studies the improvement in
TC obtainable with successive interference cancellation (SIC), an
important receiver technique that has been shown to achieve the
capacity of several classes of multiuser channels, but has not been
carefully evaluated in the context of ad hoc wireless networks. This
paper develops closed-form upper bounds and easily computable
lower bounds for the TC of ad hoc networks with SIC receivers,
for both perfect and imperfect SIC. The analysis applies to any
multiuser receiver that cancels the K strongest interfering signals
by a factor : E [0; 1]. In addition to providing the first closed-form
capacity results for SIC in ad hoc networks, design-relevant
insights are made possible. In particular, it is shown that SIC
should be used with direct sequence spread spectrum. Also, any
imperfections in the interference cancellation rapidly degrade its
usefulness. More encouragingly, only a few—often just one—interfering
nodes need to be canceled in order to get the vast majority
of the available performance gain. |
| URI: | http://dx.doi.org/10.1109/TIT.2007.901153
http://hdl.handle.net/1860/2554 |
| Appears in Collections: | Faculty Research and Publications (ECE)
|
Items in iDEA are protected by copyright, with all rights reserved, unless otherwise indicated.
|
www.drexel.edu
