H - Electricity – 04 – W
Patent
H - Electricity
04
W
H04W 72/04 (2009.01) H04W 16/14 (2009.01) H04B 1/7103 (2011.01) H04W 88/02 (2009.01)
Patent
CA 2637648
A communication system is provided with a plurality of mobile stations and a base station. A mobile station makes a pilot channel composed of a Cassak code correspond to a signal having a plurality of frequency components in a predetermined band disposed in parallel with each other in a constant distance. A mobile station transmits a transmission signal including such a signal in accordance with a scheduling signal. The mobile station also makes its own transmission signal correspond to transmission signals of other mobile stations using different bands from a band of that own transmission signal in order for the former to be orthogonal with the latter on a frequency axis. A base station calculates a difference between a receiving signal and a replica of the pilot channel to infer a channel. The base station decodes the receiving signal by using a channel inference result. The replica of the pilot signal is generated by corresponding the pilot channel composed of the Cassac code to the predetermined band disposed in parallel with each other at the constant distance.
Le système de communication comporte de multiples stations mobiles et une station de base. Une station mobile fait qu~un canal pilote composé d~un code Cazac corresponde à un signal ayant de multiples composantes de fréquence dans une bande prédéterminée, disposées parallèlement les unes aux autres à distance constante. Une station mobile transmet un signal à transmettre incluant un tel signal conformément à un signal de planification. La station mobile fait également que son propre signal de transmission corresponde à des signaux de transmission d~autres stations mobiles en utilisant différentes bandes d~une bande de son signal de transmission de façon à ce que ce dernier soit orthogonal aux suivants sur un axe des fréquences. Une station de base calcule la différence entre un signal en réception et une réplique du canal pilote pour inférer un canal. La station de base décode le signal en réception en utilisant un résultat d~inférence de canal. La réplique du signal pilote est générée par la correspondance du canal pilote composé du code Cazac avec la bande prédéterminée disposée en parallèle à ladite distance constante.
Higuchi Kenichi
Kawamura Teruo
Kishiyama Yoshihisa
Sawahashi Mamoru
Ntt Docomo Inc.
Oyen Wiggs Green & Mutala Llp
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