Communication method and apparatus

Details Communication method and apparatus Communication method and apparatus

2007-09-04

2007-09-04

Chan, Wing (Department: 2616)

Multiplex communications

Communication over free space

Repeater

C370S321000, C370S322000, C370S328000, C370S327000

Reexamination Certificate

active

10675945

ABSTRACT:
A set of formats and protocols is proposed for a satellite communications system. In these formats, a pilot signal (PS) is inserted after every 25 or 29 data symbols. The formats consist of SCPC frames (F) which may contain either data (D) and in-band signaling information (SU), or only signaling information (SU). In either case, the contents of each frame (F) are error-correction coded before transmission with the same coding rate. Each data frame (F) carries the data content of an integral number of input user data frames (M), each of which comprises four subframes. Different symbol transmission rates are used for different input data rates, the symbol transmission rates being selected so that their different synchronizing clock rates can easily be obtained from a common clock. Data bursts may be preceded by a constant power level preamble (P). The formats and protocols satisfy the requirements of a high data rate satellite communications system.

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Examination Report for the German Application with a search date of Jan. 10, 2005; 6 pages.

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