公开(公告)号：CA2528128A1

公开(公告)日：2005-01-06

申请号：CA2528128

申请日：2004-05-06

Applicant: INTERDIGITAL TECH CORP

Inventor： DEMIR ALPASLAN ,  NARAYAN GEETHA LAKSHMI ,  KAZAKEVICH LEONID

IPC: H04K1/02 ,  H04B7/005

Abstract: A method and system for adjusting the amplitude and phase characteristics of wireless communication signals generated by an analog radio transmitter, bas ed on transmit power control (TPC) signals received by a base station (BS) and known characteristics of a power amplifier (PA) included in the transmitter. A digital pre-distortion compensation module, having real and imaginary signal paths, receives and processes real and imaginary signal components used to generate the wireless communication signal. The phase and amplitude characteristics of the wireless communication signal are controlled in response to the TPC signals, such that impaired amplitude and phase characteristics of the PA are corrected.

公开(公告)号：AU2003273321A1

公开(公告)日：2004-04-30

申请号：AU2003273321

申请日：2003-09-12

Applicant: INTERDIGITAL TECH CORP

Inventor： PIETRASKI PHILIP J ,  DEMIR ALPASLAN ,  GRIECO DONALD M

IPC: H04B1/707 ,  H04B1/69 ,  H04B1/713

Abstract: A wireless transmit receive unit (WTRU) provides facilitation of cell search. In one embodiment, received samples are split into a plurality of sample sets for processing. Each of the sets is processed and an accumulated result is divided by an estimated noise value. In another embodiment, a code correlator correlates the received signal with a primary synchronization code and an auxiliary code correlator having a same length as the code correlator correlates the received signal with a code having a low cross correlation with the primary synchronization code. In another embodiment, a division of an accumulated result with a noise estimate is performed using indexes of the most significant bits.

公开(公告)号：NO20041746L

公开(公告)日：2004-04-28

申请号：NO20041746

申请日：2004-04-28

Applicant: INTERDIGITAL TECH CORP

Inventor： OZLUTURK FATIH M ,  DEMIR ALPASLAN

IPC: H04B1/707 ,  H04B1/7073 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7093 ,  H04B7/216 ,  H04B7/26 ,  H04L7/08 ,  H04L7/00

Abstract: A User Equipment (UE) receives and samples communication signals, where the communication signals have a time frame format, a transmission chip rate and a synchronization code associated with a time slot that includes a midamble that indicates a modulation of the synchronization code where a specified modulation of received synchronization codes identifies the timing for a timeslot in which data is to be received. The UE preferably includes a synchronization code determination circuit, a midamble determination circuit, and a phase modulation sequence detection circuit operatively associated with the midamble determination circuit. The UE can be configured for use with the low chip rate option of the Third Generation Partnership Project (3GPP) Universal Mobile Telecommunication System (UMTS) standards that employ a predefined set of downlink SYNC codes that point to midambles which indicate SYNC code modulation sequence to enable reading of data in a subsequent Broadcast Channel (BCH) message.

公开(公告)号：NO20041746A

公开(公告)日：2004-04-28

申请号：NO20041746

申请日：2004-04-28

Applicant: INTERDIGITAL TECH CORP

Inventor： OZLUTURK FATIH M ,  DEMIR ALPASLAN

IPC: H04B1/707 ,  H04B1/7073 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7093 ,  H04B7/216 ,  H04B7/26 ,  H04L7/08 ,  H04L7/00

CPC classification number: H04B1/708 ,  H04B1/70735 ,  H04B1/7077 ,  H04B1/7093 ,  H04B2201/7071