Title :
Rate Optimization for 2D OFDM Relaying
Author :
Riihonen, Taneli ; Wichman, Risto ; Roman, Timo
Author_Institution :
Helsinki Univ. of Technol., Helsinki
fDate :
7/1/2007 12:00:00 AM
Abstract :
We solve optimal symbol dimensions for a recently introduced two-dimensional orthogonal frequency division multiplexing (2D OFDM) scheme with a two-dimensional cyclic prefix (2D CP). The 2D OFDM technique is shown to improve the rate of a wireless relaying system if the channel coherence time is at least nine times longer than the channel impulse response. Furthermore, feasibility and application scenarios of 2D OFDM are discussed using the parameters of terrestrial digital video broadcasting systems (DVB-T/H) as examples.
Keywords :
OFDM modulation; diversity reception; telecommunication channels; 2D OFDM; 2D cyclic prefix; orthogonal frequency division multiplexing; rate optimization; terrestrial digital video broadcasting system; wireless relaying system; Delay; Digital relays; Digital video broadcasting; Diversity methods; Fast Fourier transforms; Interference cancellation; OFDM; Receiving antennas; Transceivers; Transmitting antennas;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2007.070271
