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US 2001/0043643 A1Published application
Path detection method and receiver
AssigneeNEC Corporation
InventorTadashi Ogami
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AssigneeNEC Corporation
InventorTadashi Ogami
Estimating the term…
A path detection method comprises; a correlator which receives input of a baseband signal converted to a digital signal in a wireless receiver, and which takes a reverse spread produced by the multiplication of the baseband signal and a spread code pilot symbol and outputs a correlation signal; an in-phase adder which, in each time slot, adds the correlation signal for the time slot a predetermined number of times, a first addition results storage memory for adding for the predetermined number of times, a second addition results storage memory for storing the addition results from the aforementioned in-phase adder when the addition is completed the predetermined number of times in the aforementioned time slot, an electric power adder for batch reading the results for each time slot from the aforementioned second addition results storage memory and performing addition, and a path detection apparatus which executes a path detection according to the output of the aforementioned electric power adder.
A path detection method comprising;
A path detection method comprising a correlator which receives input of a baseband signal which has been converted to a digital signal by a demodulator and an A/D converter in a wireless receiver and which takes a reverse spread produced by multiplication of said baseband signal and a spread code pilot symbol and outputs a correlation signal, a first addition results storage memory for storing said correlation signals to enable an addition process to be performed a predetermined number of times, an in-phase adder for batch addition of each correlation signal from said predetermined number of additions stored in said first addition results storage memory, a second addition results storage memory for storing addition results from said in-phase adder when said addition has been completed said predetermined number of times in a time slot, an electric power adder for batch reading results for each time slot from said second addition results storage memory and performing addition, and a path detection apparatus which executes a path detection according to output from said electric power adder.
A receiver for receiving CDMA system electric waves transmitted from a mobile station, equipped with a searcher comprising a correlator which receives input of a baseband signal which has been converted to a digital signal by a demodulator and an A/D converter in a wireless receiver and which takes a reverse spread produced by multiplication of said baseband signal and a spread code pilot symbol and outputs a correlation signal, an in-phase adder which, in each time slot, adds a correlation signal for said time slot a predetermined number of times, a first addition results storage memory for performing said addition process said predetermined number of times, a second addition results storage memory for storing addition results from said in-phase adder when said addition has been completed said predetermined number of times in said time slot, an electric power adder for batch reading results for each time slot from said second addition results storage memory and performing addition, and a path detection apparatus for executing a path detection according to output from said electric power adder.
Dependencies are inferred from the claim text.