초록 ▼

A base station for use in a CDMA mobile radio communication system utilizes a combined angular, spatial, and temporal diversity antenna architecture to improve reverse link gain and coverage. The architecture is formed from a first and second diversity narrow beamwidth antenna element arranged to re

A base station for use in a CDMA mobile radio communication system utilizes a combined angular, spatial, and temporal diversity antenna architecture to improve reverse link gain and coverage. The architecture is formed from a first and second diversity narrow beamwidth antenna element arranged to receive CDMA signals from a predetermined geographic coverage area. Each antenna element is oriented so that respective peak boresights form a 45 to 60.degree. angle with respect to each other, and are slanted 22.5 to 30.degree. with respect to a sector boresight. The first and second antenna elements are separated in distance by at least 10 wavelengths. A time delay can be connected to the outputs of the antenna elements to provide temporal diversity by delaying received signals by a predetermined period of time. A max ratio signal combiner continuously provides the best total input signal for a base station receiver.

대표청구항 ▼

[ What is claimed is:] [1.]1. In a CDMA mobile radio communication system, a base station for communicating with a plurality of mobile transceivers comprising:a first diversity narrow beamwidth antenna element arranged to receive CDMA signals transmitted from mobile transceivers located in a predete

[ What is claimed is:] [1.]1. In a CDMA mobile radio communication system, a base station for communicating with a plurality of mobile transceivers comprising:a first diversity narrow beamwidth antenna element arranged to receive CDMA signals transmitted from mobile transceivers located in a predetermined geographic coverage area;a second diversity narrow beamwidth antenna element arranged to receive CDMA signals transmitted from mobile receivers located in the same predetermined geographic coverage area as said first antenna element, wherein said first and second antenna elements are oriented so that respective peak boresights form a 45 to 60.degree. angle with respect to each other while being slanted 22.5 to 30.degree. with respect to a boresight of the coverage area, and are separated in distance by a plurality of wavelengths and provide a sector crossover point between element pairs which is 3-5 Db down from a peak beam gain; anda receiver comprising a signal combiner for combining the outputs of said first and second antenna elements, wherein said signal combiner continuously provides the best qualitative signal to said receiver.