Multicarrier system using subchannel characteristics to implemen

Details Multicarrier system using subchannel characteristics to implemen Multicarrier system using subchannel characteristics to implemen

1996-08-02

1998-10-13

Chin, Stephen

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

370536, H04L 2728

Patent

active

058223720

ABSTRACT:
A multicarrier transmission system (100) supports different desired error rates within a data symbol stream by manipulating subcarrier transmission characteristics for multiple subcarriers. A data symbol stream obtained for transmission is segmented into multiple substreams, and assigned to subcarriers based on error protection requirements (310, 320, 330). The transmission characteristics of the subcarriers are manipulated, according to a selected transmission configuration, to effect the combined error protection requirements (350, 360). Preferably, the subcarriers are modulated by allocating available power based on the relative error protection required for the substreams (360).

REFERENCES:
patent: 4630263 (1986-12-01), Townsend et al.
patent: 4679227 (1987-07-01), Hughes-Hartogs
patent: 5243629 (1993-09-01), Wei
patent: 5289501 (1994-02-01), Seshadri et al.
patent: 5307376 (1994-04-01), Castelain et al.
patent: 5479447 (1995-12-01), Chow et al.

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