Optimum Mode-Switching Assisted Adaptive Modulation
Choi, B.J. and Hanzo, L. (2001) Optimum Mode-Switching Assisted Adaptive Modulation. In, Globecom 2001, San Antonio, USA, 25 - 29 Nov 2001. , 3316-3320.
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Description/Abstract
Adaptive modulation techniques combat fading by employing a suitable modulation mode depending on the instantaneous channel conditions for improving the Bit Error Rate (BER) performance or the average through-put. Based on a generic model of constant-power adaptive modulation, exact closed form expressions of the average BER and the average throughput are derived, when employing square Quadrature Amplitude Modulation (QAM) or Phase Shift Keying (PSK) as the constituent modulation modes, operating over a Nakagami fading channel. The optimum modulation-mode switching levels, achieving the highest possible throughput under the constraint of the average BER, are obtained using the Lagrangian optimisation method. Adaptive modulation employing the optimum switching levels shows a superior performance, while maintaining a constant average BER.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Additional Information: | Event Dates: 25-29 November 2001 Organisation: Globecom Address: San Antonio, Texas, USA |
| Divisions: | Faculty of Physical Sciences and Engineering > Electronics and Computer Science > Comms, Signal Processing & Control |
| Item ID: | 256180 |
| Date Deposited: | 18 Dec 2003 |
| Last Modified: | 26 Apr 2013 02:37 |
| Contributors: | Choi, B.J. (Author) Hanzo, L. (Author) |
| Date: | November 2001 |
| Additional Information: | Event Dates: 25-29 November 2001 Organisation: Globecom Address: San Antonio, Texas, USA |
| Status: | Published |
| Further Information: | Google Scholar |
| ISI Citation Count: | 0 |
| URI: | http://eprints.soton.ac.uk/id/eprint/256180 |
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