Title :
Synchronization requirements for COFDM systems with transmit diversity
Author :
Speth, Michael ; Meyr, Heinrich
Author_Institution :
Infineon Technol., Dusseldorf, Germany
Abstract :
COFDM in combination with transmit and receive diversity is an attractive technique to increase robustness and throughput of wireless data transmission. In this paper we examine whether the sensitivity of COFDM to synchronization errors is further aggravated by these multiinput multioutput (MIMO) scenarios. A MIMO transmission model including synchronization errors is developed. Analytical expressions for the resulting disturbances are derived and verified against simulations. An analysis of the effects on optimal MIMO decoding shows that the resulting disturbances can no longer be modelled as white Gaussian noise.
Keywords :
MIMO systems; OFDM modulation; antenna arrays; data communication; decoding; diversity reception; modulation coding; radiocommunication; synchronisation; COFDM system; MIMO transmission model; coded orthogonal frequency division multiplexing; multiinput multioutput scenario; receive diversity; synchronization requirement; transmit diversity; wireless data transmission; Data communication; Decoding; Frequency synchronization; Gaussian noise; Interference; MIMO; OFDM; Power system modeling; Receiving antennas; Transmitters;
Conference_Titel :
Global Telecommunications Conference, 2003. GLOBECOM '03. IEEE
Print_ISBN :
0-7803-7974-8
DOI :
10.1109/GLOCOM.2003.1258439
