Abstract
The issue of cross-layer spreading code optimization, widely-linear receiver choice and transmit power control for non-cooperative energy-efficiency maximization in CDMA-based wireless data networks is considered in this paper. While previous work in this area has focused on a simple real signal model, in this paper a baseband complex representation of the data is used, so as to properly take into account the I and Q components of the received signal. For the case in which the received signal is improper, a widely-linear reception structure, processing separately the data and their complex conjugates, is considered. Several non-cooperative games are considered, all of which are shown to admit Nash equilibria. Interestingly, it is found that spreading code optimization coupled with widely-linear filtering permits supporting, with no multiuser interference, a number of users that is twice the processing gain. Numerical results corroborate the validity of the theoretical analysis, and show that widely-linear filtering in the presence of improper data brings remarkable performance improvements with respect to conventional linear receivers.
Original language | English (US) |
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Title of host publication | 2009 IEEE Sarnoff Symposium, SARNOFF 2009 - Conference Proceedings |
DOIs | |
State | Published - Jul 23 2009 |
Event | 2009 IEEE Sarnoff Symposium, SARNOFF 2009 - Princeton, NJ, United States Duration: Mar 30 2009 → Apr 1 2009 |
Other
Other | 2009 IEEE Sarnoff Symposium, SARNOFF 2009 |
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Country/Territory | United States |
City | Princeton, NJ |
Period | 3/30/09 → 4/1/09 |
All Science Journal Classification (ASJC) codes
- Computer Networks and Communications
- Electrical and Electronic Engineering
- Communication