ANTENNA DIVERSITY ARRANGEMENT AND METHOD

专利名称：ANTENNA DIVERSITY ARRANGEMENT AND

METHOD

发明人：SKÄRBY, Ulf申请号：EP04748996.8申请日：20040615公开号：EP1756969A1公开日：20070228

摘要：The invention relates to an antenna diversity arrangement and a radio basestation (RBS) in a frequency divided mobile cellular system with sectorized cells. Spacediversity or polarization diversity is provided by providing at least two branches (A, B). Inaccordance with the invention an operator frequency band is divided into a plurality ofbands for transmitting and receiving (TX bands and RX bands). All sectors (S1, S2, S3) arebranch wise combined in a respective tower mounted amplifier (26, 27). TX signals withinthe TX bands belonging to a TMA are diplexed and simultaneously transmitted on thesectors (S1-S3). RF signals received on one branch of a sector are combined with RFsignals received on the corresponding sector in the other branches. The RX signals socombined are fed to the radio base station on a single feeder together with the TXsignals fed in the opposite direction from transceivers (TRX) of the base station to thesame TMA. A sector may be assigned two or more TX frequencies. Frequency hoppingwithin each TX band may optionally be provided (synth hopping). If two or more TXfrequencies are assigned to a sector synth hopping may be combined with frequencyhopping between the TX bands assigned to the sector in the A branch as well as the TXbands assigned to the corresponding sector in the B branch.

申请人：TELEFONAKTIEBOLAGET LM ERICSSON (publ)

地址：Patent Unit 164 83 Stockholm SE

国籍：SE

代理机构：Sörby, Lennart

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