Pulse or digital communications – Receivers
Patent
1995-02-02
1998-11-10
Bocure, Tesfaldet
Pulse or digital communications
Receivers
375296, H04K 110
Patent
active
058355367
ABSTRACT:
A symbol generator (804) generates a time-domain discrete multi-tone symbol (810). A magnitude comparator (812) compares the magnitude of the time-domain discrete multi-tone symbol (810) with a magnitude threshold. When the magnitude of the time-domain discrete multi-tone symbol (810) compares unfavorably to the magnitude threshold, a magnitude adjusting symbol (816) is added to the time-domain discrete multi-tone symbol (810) such that the magnitude of the time-domain discrete multi-tone symbol (810) is reduced, thereby reducing the peak-to-average requirements (PAR).
REFERENCES:
patent: 5201071 (1993-04-01), Webb
patent: 5271038 (1993-12-01), Cai
patent: 5400322 (1995-03-01), Hunt et al.
patent: 5519731 (1996-05-01), Cioffi
patent: 5539777 (1996-07-01), Grube et al.
A.E. Jones, et al., "Block coding scheme for reduction of peak to mean envelope power ratio of multi-carrier transmission schemes", Electronics Ltrs. 8th Dec. 1994, vol. 30, No. 25, pp. 2098-2099.
Amati Communications Corporation; "ADSL and Discrete Multitone (DMT);" (1993).
K. Maxwell & J. M. Cioffi; "Spectral Compatibility Advantages of DMT;" (Mar. 8, 1993).
Johnson Terence L.
May Michael R.
Pendleton Matthew A.
Bocure Tesfaldet
Motorola Inc.
Webster Bryan
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