Multi-carrier transceiver

Details Multi-carrier transceiver Multi-carrier transceiver

1993-08-12

1996-03-05

O'Shea, Sandra L.

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

375261, 375262, H04K 110, H04L 2728, H04L 512

Patent

active

054973988

ABSTRACT:
A multi-carrier data transmission system utilizing lapped transforms. Information to be transmitted is divided into a plurality of channels that are coded using a transform that places information into narrow bandwidth channels. The system makes use of the superior properties of filter banks constructed with narrow-band lapped transforms to provide improved signal isolation between the data channels. A new form of lapped transformation that provides both narrow-band filtering and phase information is described. The transform utilizes two components to provide information on phase changes induced by errors on the communication link. The improved transform provides a means for correcting for phase shifts that occur on the communication link. The system has superior burst noise immunity compared to systems based on FFT's.

REFERENCES:
patent: 5128964 (1992-07-01), Mallory
John A. C. Bingham, Multicarrier Modulation for Data Transmission: An Idea Whose Time Has Come, IEEE Communications Magazine, pp. 5-14 (May 1990).
John M. Cioffi, A Multicarrier Primer, Amati Communications Corporation and Stanford University.

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