05694389 is referenced by 231 patents and cites 3 patents.

This invention improves the frequency acquisition range and the resistance to multipath interference. In a digital signal transmission system using OFDM, on the transmission side, some or all of a plurality of equidistant carrier positions are treated as reference carrier positions. The actual transmitted carriers are arranged in a predetermined pattern non-equidistant to the frequency carrier positions to form an OFDM symbol. This OFDM symbol is periodically transmitted as frequency reference symbols. On the reception side, the carrier arrangement pattern of the frequency reference symbols is detected, a carrier frequency offset is detected from the detected pattern offset, and the carrier frequency is compensated based on the frequency offset.

Title
OFDM transmission/reception system and transmitting/receiving apparatus
Application Number
8/605742
Publication Number
5694389
Application Date
February 22, 1996
Publication Date
December 2, 1997
Inventor
Shigeru Okita
Yokohama
JP
Noboru Taga
Yokohama
JP
Takashi Seki
Yokohama
JP
Agent
Cushman Darby & Cushman IP Group of Pillsbury Madison & Sutro
Assignee
Kabushiki Kaisha Toshiba
JP
IPC
H04J 11/00
View Original Source