Title :
Unequal Preamble Power Allocation Scheme for Frequency Offset Estimation in OFDM Based Packet Communication Systems
Author :
Kwak, Jaemin ; Lim, Kitaek ; Park, Pusik ; Shin, Daekyo ; Choi, Jongchan
Author_Institution :
Korea Electron. Technol. Institutes, Seoul
Abstract :
In this paper, an frequency offset estimation scheme for orthogonal frequency division multiplexing (OFDM) based packet communication systems is proposed, in which allocated powers of the short training symbols and long training symbols are different while maintaining average power of overall preamble sequence. The preamble structure considered is based on the preamble specified in IEEE802.11a and IEEE802.11p standardization group. From the simulation results, it is shown that the proposed scheme can achieve better mean squared error (MSE) performance for frequency offset estimation error than the conventional scheme.
Keywords :
OFDM modulation; frequency estimation; mean square error methods; wireless LAN; OFDM; frequency offset estimation; mean squared error performance; packet communication systems; preamble sequence; unequal preamble power allocation; Estimation error; Frequency estimation; Frequency synchronization; Guidelines; Intersymbol interference; Mobile communication; OFDM; Radio spectrum management; Standardization; Transmitters;
Conference_Titel :
Future Generation Communication and Networking (FGCN 2007)
Conference_Location :
Jeju
Print_ISBN :
0-7695-3048-6
DOI :
10.1109/FGCN.2007.228
