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公开(公告)号：JP2001218257A
公开(公告)日：2001-08-10
申请号：JP2000386403
申请日：2000-12-20
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KARIMI HAMID REZA , KUZMINSKIY ALEXANDR , LUSCHI CARLO , SANDELL MAGNUS , STRAUCHI PAUL EDWARD , YAN RAN-HONG
Abstract: PROBLEM TO BE SOLVED: To provide a method for reusing (Same cell reuse: SCR) a frequency within a same cell without assignment of a different signature to an SDMA user, sharing a game physical channel. SOLUTION: This invention introduces a time shift between SDMA users on an uplink and does not introduce it to a downlink.
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公开(公告)号：JP2002009678A
公开(公告)日：2002-01-11
申请号：JP2001124024
申请日：2001-04-23
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KUZMINSKIY ALEXANDR , LUSCHI CARLO , STRAUCHI PAUL EDWARD , YAN RAN-HONG
Abstract: PROBLEM TO BE SOLVED: To provide a wireless communication system that can overcome both the noise and interference faults. SOLUTION: At least one of a mobile station and a base station in the wireless communication system is provided with receivers 6, 8 that receives a data signal, an attached noise propagated from a station with which linking is set up, an interference signal propagated from a station in other cell, an equalization system 12 on trellis basis, that acts like detecting a data symbol coming from a faulty part which accompanies a distorted reception signal, a spatial-time filter 14 that processes the received signal minimizing distortion of data and a fault (C), and a changeover device 10 that responds to a prescribed criterion relating to a power of the interference signal in the received signal and a power of the noise signal (D) and the received signal is switched between the equalization system 12 on trellis basis and the spatial-time filter 14.
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公开(公告)号：JP2000059273A
公开(公告)日：2000-02-25
申请号：JP12016699
申请日：1999-04-27
Applicant: LUCENT TECHNOLOGIES INC
Inventor： LUSCHI CARLO , MUJTABA SYED AON , SANDELL MAGNUS , STRAUCHI PAUL EDWARD , YAN RAN-HONG , TEN BRINK STEPHAN
Abstract: PROBLEM TO BE SOLVED: To obtain an equalizer which has the effect of propagation reduced for the estimation of the channel impulse response of a transmit signal. SOLUTION: The channel impulse response of a signal transmitted over a channel of a communication system is estimated. Previous information regarding a transmit signal is obtained first. Then an estimated value of channel impulse response which minimizes an expected value of the distance between the transmit signal and a reconstituted signal is selected by using the transmit signal and previous information. For example, the minimized distance expected value is a cost function and represented, specially, as E ||r-Bh||2|r}. Here, (r) is a received signal, (h) is a vector representing the channel, and B is a matrix including transmission bits as components. Further, the previous information is obtained through data estimation which is performed for the transmit signal and obtained, specially, by a channel decoder 14. Further, an estimated value by, for example, channel observation is selected.
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公开(公告)号：JPH11313037A
公开(公告)日：1999-11-09
申请号：JP1568299
申请日：1999-01-25
Applicant: LUCENT TECHNOLOGIES INC
Inventor： LUSCHI CARLO , MUJTABA SYED AON , SANDELL MAGNUS , STRAUCHI PAUL EDWARD , TEN BRINK STEPHAN , YAN RAN-HONG
Abstract: PROBLEM TO BE SOLVED: To provide a device for satisfying the quality of respective different target services by changing the number of times of encoding step repetition for each user. SOLUTION: Concerning the device composed of a signal processing unit 40 and a decoding resource for repeating a process for repeatedly decoding a signal at least once so as to repeatedly decode the signal, the said repeated decoding resource is arranged inside a central pool 41 and when the repeated decoding process is required, this resource is allocated to the signal processing unit 40.
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