Finger using time division method and rake receiver having the same
First Claim
1. A finger comprising:
- an antenna signal combiner for combining signals received by a plurality of antenna and having the almost same time delays with an adequate delay to produce multiplexed signals;
a tracking apparatus for receiving said multiplexed signals to estimate time delay information on said multiplexed signals;
a de-spreading apparatus for de-spreading said multiplexed signals with said estimated time delay information, each of which are received from said antenna signal combiner and said tracking apparatus, respectively; and
a demodulating apparatus of demodulating said de-spread signals received from said de-spreading apparatus, to estimate original signals received by said plurality of antennas.
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Abstract
There is disclosed a finger for effectively processing signals received via multi-path in a receiver of a mobile communication system and a RAKE receiver having the finger. In processing signals received by a plurality of antennas in the present invention, a single finger batch-processes the signals received by the plurality of antennas using the property that the time delays of the received signals are almost same and a time division method. At this time, a single apparatus batch-processes a portion necessary for a common calculation and a plurality apparatus separately process portions necessary for separate calculations. Thus, the present invention can provide a high-performance finger and a RAKE receiver having the finger wherein a single finger can process each of signals received by a plurality of antennas.
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Citations
19 Claims
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1. A finger comprising:
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an antenna signal combiner for combining signals received by a plurality of antenna and having the almost same time delays with an adequate delay to produce multiplexed signals;
a tracking apparatus for receiving said multiplexed signals to estimate time delay information on said multiplexed signals;
a de-spreading apparatus for de-spreading said multiplexed signals with said estimated time delay information, each of which are received from said antenna signal combiner and said tracking apparatus, respectively; and
a demodulating apparatus of demodulating said de-spread signals received from said de-spreading apparatus, to estimate original signals received by said plurality of antennas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A RAKE receiver comprising:
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a RF analog to baseband digital converter for converting RF analog signals received by a plurality of antennas having the almost same time delays into baseband digital signals;
a signal searcher for receiving the output signals from said RF analog to baseband digital converter to generate information on the intensity of the baseband digital signals;
a signal controller for receiving information on the intensity of the signals for said signal searcher and the output signals from said RF analog to baseband digital converter to send the M number of the signals among the output signals from said RF analog to baseband digital converter using the information on the intensity of said signal;
fingers for receiving the M number of signals from said signal controller to estimate a common time delay information in the received M number of signals and for estimating original signals received per the plurality of antennas using said estimated time delay information and a time division method; and
a combiner for receiving said estimated original signals from said fingers and for combining said original signals, to thus estimate original signals received by the plurality of antennas. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 19)
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18. A method of estimating signals of a finger, comprising:
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a first step of combining signals received by a plurality of antenna and having the almost same time delays with an adequate delay to produce multiplexed signals;
a second step of estimating a common time delay information on said multiplexed signals;
a third step of de-spreading said multiplexed signals using said estimated time delay information to produce de-spread signals;
a fourth step of estimating channel information on said de-spread signals; and
a fifth step of demodulating said de-spread signals on signals of each of the antennas basis using said estimated channel information to estimate signals received by said plurality of antennas.
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Specification