Abstract
We consider a network of pairs of nodes that perform simultaneous communications over frequency-selective channels. We assume that the whole frequency band is divided into a number of subbands, and each transmitter can only use one subband. Assuming that the network is geometrically infinite, we use the throughput as a measure of network performance. We consider the problem of allocating the nodes to the subbands so that the total throughput is maximized, under the constraint of fixed total spatial node density. The optimization problem turns out to be nonconvex. We investigate the detailed structure of the functions involved in the optimization and identify a set of properties of the optimal transmitters densities over the subbands. An iterative resource allocation algorithm with low complexity is derived. From the simulations, it is shown that the optimal solution obtained through the theoretical analysis is consistent with the one obtained through exhaustive search.
Original language | English (US) |
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Title of host publication | 2015 IEEE Wireless Communications and Networking Conference, WCNC 2015 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 2008-2013 |
Number of pages | 6 |
ISBN (Electronic) | 9781479984060 |
DOIs | |
State | Published - Jun 17 2015 |
Event | 2015 IEEE Wireless Communications and Networking Conference, WCNC 2015 - New Orleans, United States Duration: Mar 9 2015 → Mar 12 2015 |
Publication series
Name | 2015 IEEE Wireless Communications and Networking Conference, WCNC 2015 |
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Other
Other | 2015 IEEE Wireless Communications and Networking Conference, WCNC 2015 |
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Country/Territory | United States |
City | New Orleans |
Period | 3/9/15 → 3/12/15 |
Bibliographical note
Publisher Copyright:© 2015 IEEE.
Keywords
- Lambert function
- Throughput
- frequency-selective networks
- non-convex optimization