OFDM transmission/reception system and transmitting/receiving ap

Details OFDM transmission/reception system and transmitting/receiving ap OFDM transmission/reception system and transmitting/receiving ap

1996-02-22

1997-12-02

Olms, Douglas W.

Multiplex communications

Generalized orthogonal or special mathematical techniques

Particular set of orthogonal functions

375326, H04J 1100

Patent

active

056943890

ABSTRACT:
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.

REFERENCES:
patent: 5343498 (1994-08-01), Toy et al.
patent: 5506836 (1996-04-01), Ikeda et al.
patent: 5530812 (1996-08-01), Philips
Nogami et al, "A Fast Acquisition Technique of Frequency and Timing Period for OFDM Systems", Technical Report of IEICE, RCS94-152 (1995-02), pp. 25-30.
Trip Report and Recommendation Regarding COFDM, submitted by the Task Force on COFDM of the Transmission Expert Group, Jan. 1994.
Hara et al: "System Performance of Multicarrier Modulation in Fading Channels", ITE Technical Report, vol. 18, No. 11, pp. 39-44 (Feb. 1994).

Affiliated with

Also associated with

Rating

OFDM transmission/reception system and transmitting/receiving ap does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with OFDM transmission/reception system and transmitting/receiving ap, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and OFDM transmission/reception system and transmitting/receiving ap will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-807382