Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
2007-01-30
2007-01-30
Eng, George (Department: 2617)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C455S513000, C455S522000
Reexamination Certificate
active
11011081
ABSTRACT:
A mobile communications system includes an RF processor for transmitting and receiving radio signals to and from a base station, and a base-band processor for spread-spectrum coding a frame signal to be transmitted to transfer it to the RF processor and spread-spectrum decoding a signal transferred from the RF processor to extract a frame signal. The base-band processor includes a rake receiver for demodulating the received signal and a cell selector and processor for selecting a cell to be connected based upon the propagation path and the power of the received signal. The cell selector and processor includes a search circuit for detecting a cell from the received signal, a cell operator for determining a cell from which received is a signal associated with a shorter propagation path, based on the reception timing of the received signal, and a connecting cell selector for selecting a cell to be connected.
REFERENCES:
patent: 5394158 (1995-02-01), Chia
patent: 5677908 (1997-10-01), Oura
patent: 5924034 (1999-07-01), Dupuy
patent: 1 069 794 (2001-01-01), None
Akahori Hiroji
Atsumi Tsuyoshi
Bhattacharya Sam
Eng George
Nixon & Peabody LLP
Oki Electric Industry Co. Ltd.
Studebaker Donald R.
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