-
公开(公告)号：JP2003158779A
公开(公告)日：2003-05-30
申请号：JP2002274380
申请日：2002-09-20
Applicant: ST MICROELECTRONICS NV
Inventor： BONHOMME CORINNE
Abstract: PROBLEM TO BE SOLVED: To provide a method of estimating the moving speed of a mobile terminal which is communicating with a base station through a transmission channel. SOLUTION: First, the facing in the channel is estimated (30) and a first autocorrelation result is obtained by autocorrelation of the fading (32). On the other hand, with various prescribed values of the moving speed of the mobile station, various reference autocorrelation results are previously calculated by using a known and an assumed fading autocorrelation functions (33). The first autocorrelation result is compared with the various reference autocorrelation results (34) to estimate the moving speed of the mobile station as a function of the comparison (36).
-
公开(公告)号：JP2003163614A
公开(公告)日：2003-06-06
申请号：JP2002268620
申请日：2002-09-13
Applicant: ST MICROELECTRONICS NV
Inventor： BONHOMME CORINNE
Abstract: PROBLEM TO BE SOLVED: To reduce complications in obtaining a fading coefficient of a multi- path transmission channel route. SOLUTION: First estimation of the fading coefficient of a multi-path transmission channel is determined by the maximum likelihood method. A set of Wiener filter coefficients are stored according to predetermined speed of movement of a mobile terminal and predetermined power level of a signal. The real speed of the mobile terminal is estimated and the power of the signal for each path is measured. Thereafter, from the estimated movement speed and the measured signal power, a set of the Wiener filter coefficients are derived with which the first estimations are filtered to obtain the final estimation of the fading coefficient. COPYRIGHT: (C)2003,JPO
-
公开(公告)号：JP2002198869A
公开(公告)日：2002-07-12
申请号：JP2001327544
申请日：2001-10-25
Applicant: ST MICROELECTRONICS NV
Inventor： BONHOMME CORINNE
Abstract: PROBLEM TO BE SOLVED: To improve the estimate accuracy of impulse response of an information transmission channel of a cellular mobile telephone. SOLUTION: In this method, a widely spreading multipath is distinguished from modestly spreading multipath to estimate the impulse response in the information transmission channel. The maximum value is used for the number the coefficients of the impulse response, thereby generating a first estimated value of the impulse response of the transmission channel. A time region spreading parameter of the transmission channel is used as a function of the actual characteristics of the transmission channel to determine the useful number of the coefficients of the impulse response of the transmission channel. The finally estimated value is generated by taking the useful number of the coefficients into consideration.
-
公开(公告)号：JP2002057605A
公开(公告)日：2002-02-22
申请号：JP2001169504
申请日：2001-06-05
Applicant: ST MICROELECTRONICS NV
Inventor： BONHOMME CORINNE
Abstract: PROBLEM TO BE SOLVED: To enable equivalent algorithm to be reduced in complexity and improved in performance. SOLUTION: A device is equipped with a receiver, an estimate means which executes the estimate of the impulse response of a transmission channel, a preprocessing block which obtains the impulse response that is minimally phase- shifted corresponding to the converted transmission channel on the basis of the estimated impulse response, a transmission means possessed of a filter which is capable of keeping the autocorrelation of the received signals and autocorrelation of the filtered signals equally and of filtering the received signals, and an equalizer which applies equalization processing to the filtered signals, taking the converted impulse response into consideration.
-
公开(公告)号：DE60137574D1
公开(公告)日：2009-03-19
申请号：DE60137574
申请日：2001-09-25
Applicant: ST MICROELECTRONICS NV
Inventor： BONHOMME CORINNE
Abstract: The mobile terminal speed of movement method has a channel estimate (30) estimating fading. Autocorrelation is carried out to obtain a first value (33) for different speeds of movement. The first value is compared with different reference levels (34) and an estimate (36) made of the speed of movement.
-
Patent Agency Ranking
公开(公告)号：DE60032906D1
公开(公告)日：2007-02-22
申请号：DE60032906
申请日：2000-11-07
Applicant: ST MICROELECTRONICS NV
Inventor： BONHOMME CORINNE
Abstract: The procedure for estimation of the pulse response of an information transmission channel comprises an evaluation of the useful number (N2) of coefficients of the pulse response of the channel as a function of the real characteristics of the transmission channel. This includes the evaluation of a time spreading parameter (ds) for the transmission channel. The procedure for estimation of the pulse response of an information transmission channel comprises an evaluation of the useful number (N2) of coefficients of the pulse response of the channel as a function of the real characteristics of the transmission channel. A first estimation (30) of the pulse response is effected by using a predetermined maximum value for the number of coefficients of this pulse response. The evaluation of the useful number of coefficients comprises the evaluation of a time spreading parameter (ds) for the transmission channel, and the determination of a final estimation (H2) of the pulse response of the channel taking account of the useful number of coefficients.
-
公开(公告)号：DE60022012D1
公开(公告)日：2005-09-22
申请号：DE60022012
申请日：2000-06-08
Applicant: ST MICROELECTRONICS NV
Inventor： BONHOMME CORINNE
Abstract: The digital word equaliser having a receiver (TP) processing the pulse response, and a transformer process providing a minimum phase. The filtered signal received preserves equality between auto correlation of received and filtered signal and an equalisation process is applied to equalise the filtered signal taking account of the transformed pulse response.
-
公开(公告)号：DE602004024280D1
公开(公告)日：2010-01-07
申请号：DE602004024280
申请日：2004-01-05
Applicant: ST MICROELECTRONICS NV
Inventor： BONHOMME CORINNE
Abstract: The method involves detecting echoes of a received signal, and estimating inter-correlation between two temporally close echoes. The two echoes with less energy are rejected if the inter-correlation satisfies a predetermined test. The signal transmits symbols, each with a predetermined number of chips. The two echoes are declared close when they are temporally separated by duration lower than or equal to the duration of a chip. An independent claim is also included for a component of a wireless communication system incorporating a rake receiver.
-
公开(公告)号：DE60118920T2
公开(公告)日：2006-12-28
申请号：DE60118920
申请日：2001-09-25
Applicant: ST MICROELECTRONICS NV
Inventor： BONHOMME CORINNE
-
公开(公告)号：DE60118920D1
公开(公告)日：2006-05-24
申请号：DE60118920
申请日：2001-09-25
Applicant: ST MICROELECTRONICS NV
Inventor： BONHOMME CORINNE
-
-
-
-
-
-
-
-
-
Search Results
11
records
(took 0.02 seconds)
