Title :
Adaptive modulation for MIMO-OFDM systems
Author :
Pandharipande, Ashish
Author_Institution :
Samsung Adv. Inst. of Technol., Suwon, South Korea
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.
Keywords :
MIMO systems; OFDM modulation; adaptive modulation; dynamic programming; optimisation; MIMO-OFDM systems; adaptive modulation; channel state information; discrete optimization; dynamic programming; error rate constraint; modulation constellation size optimization; multiple transmitter/receiver antennas; total bit rate constraint; transmit power minimization; Adaptive arrays; Adaptive systems; Bit rate; Dynamic programming; Error analysis; Heuristic algorithms; OFDM modulation; Receiving antennas; Transmitters; Transmitting antennas;
Conference_Titel :
Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th
Print_ISBN :
0-7803-8521-7
DOI :
10.1109/VETECF.2004.1400226
