Cell search method and apparatus for mobile station in mobile communication system

作者: Motohiro Tanno , Takehiro Nakamura

DOI:

关键词: SignalComputer sciencePrecision rectifierCode (cryptography)AlgorithmFrame (networking)Mobile stationElectronic engineeringCorrelation coefficientValue (computer science)Process (computing)

摘要: The present invention reduces the time required for cell search and increase accuracy of by determining, during selection frame boundaries a scramble code, whether or not results are correct. A mobile station causes descramblers to descramble received signal with eight codes. Then, correlators calculate phases codes on basis boundaries, despreads spreading code CPICH. performs this operation over plurality symbols, averaging process sections average results. peak detector selects which an correlation coefficient is largest. This maximum output detection judging section, then calculates ratio value reference calculated inside station, thereby

参考文章(11)
Shitz Shlomo Shamai, Daniel Yellin, Cyclic adaptive receivers for DS-CDMA signals ,(1999)
Srinath Hosur, Sundararajan Sriram, Spread-spectrum telephony with accelerated code acquisition ,(1999)
Karim Jamal, Yi-Pin Eric Wang, Raiz Esmailzadeh, Per Johan Anders Nyström, Cell searching in a CDMA communications system ,(1998)
Seppo Alanara, Hannu Pirila, Harri Jokinen, Jukka Ranta, Mobile station having enhanced standby mode ,(1997)
Junji Somon, Satoshi Imaizumi, Noriaki Minamida, Koichi Aihara, Hidetoshi Suzuki, Synchronization acquisition apparatus and synchronization acquisition method ,(2001)
Jean-Francois Bouquier, Elie Bejjani, Benoit De Cacqueray, Javier Sanchez Araujo, Method of synchronizing a radio terminal of a radio communication network and a corresponding radio terminal ,(2001)
Fumiyuki Adachi, Akihiro Higashi, Kenichi Higuchi, Mamoru Sawahashi, Koji Ohno, Signal transmitting method, transmitter, receiver, and spread-spectrum code synchronizing method for mobile communication system ,(1997)