Abstract
We consider adaptive modulation in OFDM systems employing multiple transmitter and receiver antennas. The goal is to determine the optimum choice of modulation constellations from among a given set in order to minimize the transmit power, subject to a total bit rate and error rate constraint. A dynamic programming based algorithm, that results in optimum selection of constellation sizes, is proposed to solve the resulting discrete optimization problem.
Original language | English |
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Title of host publication | IEEE 60th Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 |
Publisher | Institute of Electrical and Electronics Engineers |
Pages | 1266-1270 |
Number of pages | 5 |
ISBN (Print) | 0-7803-8521-7 |
DOIs | |
Publication status | Published - 18 Apr 2005 |
Externally published | Yes |
Event | 60th Vehicular Technology Conference (VTC 2004-Fall) - Los Angeles, CA, USA, Los Angeles, CA, United States Duration: 26 Sept 2004 → 29 Sept 2004 Conference number: 60 |
Conference
Conference | 60th Vehicular Technology Conference (VTC 2004-Fall) |
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Abbreviated title | VTC 2004-Fall |
Country/Territory | United States |
City | Los Angeles, CA |
Period | 26/09/04 → 29/09/04 |
Keywords
- OFDM modulation
- Adaptive systems
- Transmitters
- Adaptive arrays
- Receiving antennas
- Transmitting antennas
- Bit rate
- Error analysis
- Dynamic programming
- Heuristic algorithms