Digital radio communications receiver

Details Digital radio communications receiver Digital radio communications receiver

1996-10-28

1999-04-27

Vu, Huy D.

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

375365, H04J 306, H04J 314

Patent

active

058987436

ABSTRACT:
A digital radio communications receiver for predicting correctly a frame structure and assuring correct synchronization. The digital radio communications receiver for use in a digital communications system having two or more frame structures on a single channel, comprises a unique word detector module for detecting a unique word from a received bit string, a receive timing controller for timing controlling a received frame based on the unique word detection information from the unique word detector module, a frame structure determining module for determining the frame structure based on the unique word detection information from the unique word detector module and the frame structure determining guard level, and a frame structure determining guard level setting module for setting the frame structure determining guard level that is the number of consecutive detections of the frame structure in frame structure determination conditions and outputting the resulting guard level to the frame structure determining module, whereby the probability of erroneous detection of the frame structure is lowered by recognizing a change in the frame structure and by outputting the information about the new frame structure.

REFERENCES:
patent: 5109393 (1992-04-01), Saegusa
patent: 5450413 (1995-09-01), Hazama
patent: 5550833 (1996-08-01), Fijisawa
patent: 5619507 (1997-04-01), Tsuda
"Radio Transmission in the American Mobile Satellite System", American Institute of Aeronautics and Astronautics, Inc., pp. 280-294 (1994).
"Personal Handy Phone System", Research & Development Center for Radio Systems (RCR), RCR Standard Version 1, RCR STD-28, pp. 67, 78, 93 (1993).

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