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 antennas and having the 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;
a channel estimating apparatus for estimating channel information of said de-spread signals received from said de-spreading apparatus; 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, wherein said channel estimating apparatus includes a channel state estimator for receiving said multiplexed signals from said multiplexer to estimate channel information on the signals per the plurality of the antennas using a time division method, a demultiplexer for demultiplexing the output signals from said channel state estimator and a plurality of storage means for storing said demultiplexed signals from said demultiplexer, so that channel information on each of said antennas basis is estimated.
4 Assignments
0 Petitions
Accused Products
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.
-
Citations
13 Claims
-
1. A finger comprising:
-
an antenna signal combiner for combining signals received by a plurality of antennas and having the 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;
a channel estimating apparatus for estimating channel information of said de-spread signals received from said de-spreading apparatus; 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, wherein said channel estimating apparatus includes a channel state estimator for receiving said multiplexed signals from said multiplexer to estimate channel information on the signals per the plurality of the antennas using a time division method, a demultiplexer for demultiplexing the output signals from said channel state estimator and a plurality of storage means for storing said demultiplexed signals from said demultiplexer, so that channel information on each of said antennas basis is estimated. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A RAKE receiver comprising:
-
a RF analog to baseband digital converter for converting RF analog signals received by a plurality of antennas having the 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, wherein said finger includes;
an antenna signal combiner for combining signals received by a plurality of antennas 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;
a channel estimating apparatus for estimating channel information of said de-spread signals received from said de-spreading apparatus; 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. wherein said channel estimating apparatus includes a channel state estimator for receiving said multiplexed signals from said multiplexer to estimate channel information on the signals per the plurality of the antennas using a time division method, a demultiplexer for demultiplexing the output signals from said channel state estimator and a plurality of storage means for storing said demultiplexed signals from said demultiplexer, so that channel information on each of said antennas basis is estimated. - View Dependent Claims (8, 9, 10, 11, 12)
-
-
13. A method of estimating signals of a finger, comprising:
-
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, wherein said third step further includes;
a first sub-step of extending the distance between said de-spread signals to produce transformed de-spread signals; and
a second sub-step of transmitting said transformed de-spread signals to said fourth step and said fifth step, respectively.
-
Specification