Simultaneous broadcasting system, transmitter and receiver therefor
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United States of America Patent
Stats
-
Jul 3, 2001
Grant Date -
N/A
app pub date -
Nov 17, 1998
filing date -
Feb 27, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A simultaneous broadcasting system, a transmitter, and a receiver therefor use a first frequency bandwidth for a wide area broadcasting and a second frequency bandwidth for a local area broadcasting obtained by dividing a frequency bandwidth of one broadcasting channel. In the simultaneous broadcasting system, a same program for the wide area broadcasting is transmitted based on an OFDM modulation method by using the first frequency bandwidth and a different program for each local area station is transmitted by using a different spreading code allocated for each local are station based on a SS modulation method.
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