移動局、通信システム及び送信方法

Japanese Patent JP4527065

B2

A disclosed communication system includes multiple mobile stations and a base station. The mobile station maps a pilot channel comprising a CAZAC code to a signal including multiple frequency components arranged at regular intervals in a given frequency band, and transmits a transmission signal including the signal according to scheduling information. The mobile station performs the mapping such that its transmission signal and transmission signals of other mobile stations using different frequency bands become orthogonal to each other on a frequency axis. The base station calculates the correlation between a received signal and a pilot channel replica, performs channel estimation, and demodulates the received signal based on the result of channel estimation. The base station generates the pilot channel replica by mapping a pilot channel comprising a CAZAC code to a signal including multiple frequency components arranged at regular intervals in a given frequency band.

Teruo Kawamura
Yoshihisa Kishiyama
Kenichi Higuchi
Mamoru Sawahashi

JP2006009302A

August 18, 2010

January 17, 2006

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NTT DoCoMo, Inc.

H04W76/02; H04B1/707; H04J1/00; H04J13/18; H04W72/04; H04W76/00

3GPP TR 25.814 V0.4.2 ,3GPP,2005年11月,pp.1,41-44
NTT DoCoMo et al.,Orthogonal Pilot Channel in the Same Node B in Evolved UTRA Uplink,TSG-RAN WG1 #42bis R1-051142,3GPP,2005年10月
E. Carni et al.,Synchronous CDMA Based on the Cyclical Translations of a CAZAC Sequence,Wireless Communication Systems, 2005. 2nd International Symposium on,IEEE,2005年 9月,pp.442-446

Tadahiko Ito

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