Patent ID: 6768912
Filing Date: 2004-07-27
Classification: H04B

Abstract:
A radio base station apparatus comprising:first and second shelves, wherein said first shelf comprises: a first shelf current use system transmission signal processing circuit which generates a first inter-shelf signal from a first shelf current use system baseband signal, and generates a first shelf current use system spread signal from said first shelf current use system baseband signal and a second inter-shelf signal; a first shelf standby system transmission signal processing circuit which generates a third inter-shelf signal from a first shelf standby system baseband signal, and generates a first shelf standby system spread signal from said first shelf standby system baseband signal and a fourth inter-shelf signal; and a first shelf radio transmitting section which has a first shelf antenna and generates a first shelf radio signal from said first shelf current use system spread signal and said first shelf standby system spread signal to transmits from said first shelf antenna, and wherein said second shelf comprises: a second shelf current use system transmission signal processing circuit which generates said second inter-shelf signal from a second shelf current use system baseband signal, and generates a second shelf current use system spread signal from said second shelf current use system baseband signal and said first inter-shelf signal; a second shelf standby system transmission signal processing circuit which generates said fourth inter-shelf signal from a second shelf standby system baseband signal, and generates a second shelf standby system spread signal from said second shelf standby system baseband signal and said third inter-shelf signal; and a second shelf radio transmitting section which has a second shelf antenna and generates a second shelf radio signal from said second shelf current use system spread signal and said second shelf standby system spread signal to transmits from said second shelf antenna.