Title :
A new design of OFDM for ultra-wideband systems
Author :
Choi, Eun Chang ; Huh, Jae Doo ; Kang, Seog Geun
Author_Institution :
Electron. & Telecommun. Res. Inst., Daejeon
Abstract :
In this paper, a three-dimensional (3-D) orthogonal frequency division multiplexing (OFDM) is introduced. In the new OFDM, a 3-D signal mapper and 2-D inverse discrete Fourier transform are used to allocate 3-D signals to OFDM subchannels and to modulate the signals, respectively. The minimum Euclidean distance of the 3-D signal mapper is much farther than that of the 2-D mapper if both mappers are normalized to have the same average power. As a result, the proposed OFDM has much improved error performance as compared with the conventional scheme.
Keywords :
OFDM modulation; channel allocation; discrete Fourier transforms; signal processing; ultra wideband communication; wireless channels; 2D inverse discrete Fourier transform; 3D signal mapper; OFDM design; channel allocation; minimum Euclidean distance; modulation; orthogonal frequency division multiplexing; ultra-wideband system; Binary sequences; Constellation diagram; Design engineering; Discrete Fourier transforms; Euclidean distance; OFDM modulation; Polarization shift keying; Signal mapping; Ultra wideband technology; Wireless communication;
Conference_Titel :
Consumer Electronics, 2009. ICCE '09. Digest of Technical Papers International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4244-4701-5
Electronic_ISBN :
978-1-4244-2559-4
DOI :
10.1109/ICCE.2009.5012223
