Title:
基地局、同期信号送信方法、及び無線通信システム
Document Type and Number:
Japanese Patent JP7118011
Kind Code:
B2
Abstract:
A base station for transmitting a synchronization signal from N transmission antennas (N>=2) in orthogonal frequency division multiple access includes a signal sequence generation unit configured to generate a synchronization signal sequence to be used for the synchronization signal in a frequency domain; a subcarrier mapping unit configured to divide a transmission band of the synchronization signal into K frequency blocks (K>=2) and map the synchronization signal sequence into one or more subcarriers in the K frequency blocks; a precoding unit configured to generate N precoding vectors to be multiplied by the synchronization signal sequence in the frequency domain and multiply the synchronization signal sequence to be transmitted from an n-th antenna (1<=n<=N) by at least an n-th precoding vector; and a transmission unit configured to transmit the synchronization signal from the N transmission antennas.
Inventors:
Yoshihisa Kishiyama
Satoshi Nagata
Keisuke Saito
Sawahashi Mamoru
Satoshi Nagata
Keisuke Saito
Sawahashi Mamoru
Application Number:
JP2018561870A
Publication Date:
August 15, 2022
Filing Date:
December 14, 2017
Export Citation:
Assignee:
Ntt docomo, Inc.
International Classes:
H04L27/26; H04B7/06; H04J1/00; H04W16/28; H04W48/16
Domestic Patent References:
| JP2016213530A |
Foreign References:
| WO2009041069A1 |
Other References:
志村彩 他,ヘテロジーニアスネットワークにおける2ステップの周波数オフセット推定を用いる初期セルサーチ時間特性に対するPVS送信ダイバーシチの効果,電子情報通信学会技術研究報告 RCS2016-102,一般社団法人 電子情報通信学会,2016年07月22日,Vol.116, No.147,p.47-52
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Ryuji Ishihara
Tadahiko Ito
Ryuji Ishihara
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