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公开(公告)号:NO20062435A
公开(公告)日:2006-08-02
申请号:NO20062435
申请日:2006-05-29
Applicant: INTERDIGITAL TECH CORP
Inventor: STERNBERG GREGORY S , YANG RUI , LI BIN , PIETRASKI PHILIP J
CPC classification number: H04L1/0026 , H04L1/20 , H04L25/0202
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公开(公告)号:AR046830A1
公开(公告)日:2005-12-28
申请号:ARP040104064
申请日:2004-11-05
Applicant: INTERDIGITAL TECH CORP
Inventor: PIETRASKI PHILIP J , STERNBERG GREGORY S , YANG RUI , LI BIN
Abstract: Un método y aparato para estimar e informar la calidad de un canal de comunicación inalámbrica entre una unidad inalámbrica de transmisión/recepción (WTRU) y un Nodo B. Una senal modulada es recibida desde el Nodo B a través del canal de comunicación y se lleva a cabo una estimación de canal en la senal modulada para proveer un estimado de canal. en una forma de realización, la senal modulada es demodulada en base al estimado de canal para proveer una senal demodulada y se obtiene un estimado de relación entre senal e interferencia (SIR) en base a la senal demodulada. La calidad del canal de comunicación es estimada en base al menos al estimado de SIR. En una forma de realización alternativa, se obtiene un estimado de SIR en base al estimado de canal. La calidad del canal de comunicación es estimada en base al estimado de SIR y a información adicional que incluye al menos uno entre información de velocidad de WTRU, distorsión de retardo y potencia de transmisión.
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公开(公告)号:NO20054871A
公开(公告)日:2005-11-11
申请号:NO20054871
申请日:2005-10-21
Applicant: INTERDIGITAL TECH CORP
Inventor: GRIECO DONALD M , KAZAKEVICH LEONID , YANG RUI
CPC classification number: H03G3/3052 , H03G3/3036 , H03G3/3042 , H03G3/3047 , H04L5/1484 , H04M3/40
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公开(公告)号:AR044904A1
公开(公告)日:2005-10-05
申请号:ARP040102224
申请日:2004-06-25
Applicant: INTERDIGITAL TECH CORP
Inventor: REZNIK ALEXANDER , YANG RUI , LI BIN , ZEIRA ARIELA
Abstract: La presente tiene muchos aspectos. Un aspecto del presente es realizar ecualización utilizando un procedimiento de ventana deslizante. Un segundo aspecto vuelve a utilizar información derivada de cada ventana para su uso por parte de una ventana subsiguiente. Un tercer aspecto utiliza un procedimiento basado en transformada de Fourier discreta para la ecualización. Un cuarto aspecto se refiere al manejo de sobremuestreo de las señales recibidas y respuestas de canal. Un quinto aspecto se refiere al manejo de antenas de recepción múltiples. Una sexta forma de realización se refiere al manejo tanto de sobre-muestreo como de antenas de recepción múltiples.
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公开(公告)号:DE69828589D1
公开(公告)日:2005-02-17
申请号:DE69828589
申请日:1998-03-11
Applicant: INTERDIGITAL TECH CORP
Inventor: MESECHER K , YANG RUI , CERDA RAMON
IPC: H04L27/22 , H04B1/707 , H04B1/7085 , H04B1/7117 , H04B7/216 , H04L27/00 , H04L27/233
Abstract: A receiver for receiving a CDMA communication signal that is wirelessly transmitted includes a system for correcting phase errors in an information signal which has been transmitted. The correction system comprises circuitry for generating a mixing signal and for combining the mixing signal with said information signal to produce a correction signal. An analyzer analyzes the phase of said correction signal and generates an error signal based on the deviation of the analyzed phase from a reference phase. A bandwidth controller which recursively adjusts the phase of the correction signal such that the phase of said correction signal is substantially equal to said reference phase. The bandwidth controller then selects a bandwidth within an adjustable range based on the correction signal, estimates an offset by interrogating the error signal, and modifies said correction signal by the offset.
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66.
公开(公告)号:CA2532262A1
公开(公告)日:2005-01-27
申请号:CA2532262
申请日:2004-07-13
Applicant: INTERDIGITAL TECH CORP
Inventor: REZNIK ALEXANDER , ZEIRA ARIELA , YANG RUI , LI BIN
IPC: H04B1/00 , H04B1/7115 , H04L25/03 , H04Q20060101
Abstract: A receiver which suppresses inter-cluster multipath interference by processing an impulse channel response consisting of two multipath clusters, each cluster having groups of signals with multiple delays. In one embodiment, the receiver includes a single antenna and parallel-connected delay units used to align the groups of signals before being input into respective sliding window equalizers. The outputs of the equalizers are combined at chip level via a combiner which provides a single output. In another embodiment, a cluster multipath interference suppression (CMIS) circuit is incorporated into the receiver. The CMIS circuit includes a hard decision unit and a plurality of signal regeneration units to generate replicas of the multipath clusters. The replicas are subtracted from the respective outputs of the delay units and the results are input to the respective sliding window equalizers. In another embodiment, multiple antennas are used to receive and process the clusters.
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公开(公告)号:NO20045558L
公开(公告)日:2004-12-20
申请号:NO20045558
申请日:2004-12-20
Applicant: INTERDIGITAL TECH CORP
Inventor: KAZAKEVICH LEONID , YANG RUI
Abstract: An analog/digital gain control device avoid some of the requirements associated with the nature of a closed-loop AGC circuits and which meets the remaining requirements without much difficulty uses an analog to digital conversion method that increases the number of effective ADC bits by compressing the baseband input analog signal using a logarithmic circuit. After the compressed analog signal is converted into a digital signal, a digital anti-log process or look-up table (LUT) is used to expand the digital signal back to the original linear scale. The word size of the output of the anti-log process is larger than the input word size due to the nature of the anti-log function. To reduce the word size of the digital signal an open loop normalization technique can be applied.
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公开(公告)号:AU2003287680A1
公开(公告)日:2004-06-15
申请号:AU2003287680
申请日:2003-11-17
Applicant: INTERDIGITAL TECH CORP
Inventor: STERNBERG GREGORY S , YANG RUI , PIETRASKI PHILIP J , OLESEN ROBERT LIND
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公开(公告)号:DE60329321D1
公开(公告)日:2009-10-29
申请号:DE60329321
申请日:2003-11-17
Applicant: INTERDIGITAL TECH CORP
Inventor: STERNBERG GREGORY S , YANG RUI , PIETRASKI PHILIP J , OLESEN ROBERT LIND
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公开(公告)号:AT443377T
公开(公告)日:2009-10-15
申请号:AT03781981
申请日:2003-11-17
Applicant: INTERDIGITAL TECH CORP
Inventor: STERNBERG GREGORY S , YANG RUI , PIETRASKI PHILIP , OLESEN ROBERT
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