Multipoint data transmission
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United States of America Patent
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-
Dec 9, 2014
Grant Date -
Oct 30, 2008
app pub date -
Feb 26, 2008
filing date -
Feb 26, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A semi-single frequency network (SFN) concept is presented. According to the SFN concept, the same data signal is transmitted from multiple base stations to a mobile terminal simultaneously on the same frequency band. Accordingly, the transmitted signals are combined in the radio channel and the mobile terminal experiences the transmitted signals as one signal propagated through a multipath channel. Additionally, each base station transmits a base station specific pilot signal. The mobile terminal carries out a channel estimation procedure for each received pilot signal and combines the channel estimates to obtain information how to equalize the received data signal. Then, the mobile terminal calculates equalization weights from the combined channel estimates and equalizes the received data signal.
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