Method of transmitting a data stream, transmitter and receiver

Details Method of transmitting a data stream, transmitter and receiver Method of transmitting a data stream, transmitter and receiver

1994-02-07

1995-05-16

Safourek, Benedict V.

Multiplex communications

Wide area network

Packet switching

370 20, 370 70, 375260, H04L 2726

Patent

active

054167671

ABSTRACT:
The invention relates to a method of transmitting data by modulating a frequency multiplex of carriers at a relatively low symbol rate, such as in OFDM (orthogonal frequency division multiplex). According to the inventive method, intersymbol interference is deliberately introduced at the transmitter side to reduce cross-talk between data of different carriers at the receiver side, such as to simplify an equalizing device in a receiver. The intersymbol interference at the transmitter side is introduced after the frequency multiplex modulation has taken place, by repeating groups of output symbols produced by an IFFT transformer and subsequently shaping these repeated groups by means of symbol-by-symbol scaling with coefficients constituting a window function. Subsequent shaped and repeated groups of these output symbols mutually overlap.

REFERENCES:
patent: 4641318 (1987-02-01), Addeo
patent: 5170413 (1992-12-01), Hess et al.
patent: 5191576 (1993-03-01), Pommier et al.
patent: 5274629 (1993-12-01), Helard et al.
patent: 5323391 (1994-06-01), Harrison
Bingham, J. A. C., "Multicarrier Modulation for Data Transmission: An Idea Whose Time Has Come", IEEE Communications Magazine, May 1990, pp. 5-14.

Affiliated with

Also associated with

Rating

Method of transmitting a data stream, transmitter and receiver does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of transmitting a data stream, transmitter and receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of transmitting a data stream, transmitter and receiver will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-643658