CDMA adaptive antenna receiving apparatus and communication system

A receiving apparatus for receiving a desired signal by synthesizing a plurality of desired signal components incoming at a plurality of different timings and from a plurality of different directions at each timing while eliminating interference signals, which comprises:

• a plurality of receivers of which each receives one or more of said desired signal components incoming from different directions at the same time,
• wherein each of said plurality of receivers comprises a plurality of adaptive receiving units of which each updates a directivity thereof so as to match with an incoming direction of one of said desired signal components incoming from different directions at the same time,
• wherein each said receiver further comprises:
• a means for detecting a plurality of sections containing said incoming directions of said plurality of desired signal components;
• and
• a control means for controlling directivities of said plurality of adaptive receiving units in accordance with said detected sections containing said incoming directions of said plurality of desired signal components and said directivities of said plurality of adaptive receiving units,
• wherein in case of directivities of all the working adaptive receiving units being not contained within one of said plurality of sections containing said incoming directions, said control means adds another adaptive receiving unit having a directivity to be included within the section concerned.

A receiving apparatus for receiving a desired signal by synthesizing a plurality of desired signal components incoming at a plurality of different timings and from a plurality of different directions at each timing while eliminating interference signals, which comprises:

• a plurality of receivers of which each receives one or more of said desired signal components incoming from different directions at the same time,
• wherein each of said plurality of receivers comprises a plurality of adaptive receiving units of which each updates a directivity thereof so as to match with an incoming direction of one of said desired signal components incoming from different directions at the same time,
• wherein each said receiver further comprises:
• a means for detecting a plurality of sections containing said incoming directions of said plurality of desired signal components;
• and
• a control means for controlling directivities of said plurality of adaptive receiving units in accordance with said detected sections containing said incoming directions of said plurality of desired signal components and said directivities of said plurality of adaptive receiving units,
• wherein in case of directivities of a plurality of working adaptive receiving units being contained within one of said plurality of said sections including said incoming directions, said control means halts operations of adaptive receiving units other than that having relatively higher reception accuracy among said plurality of said working adaptive receiving units.

A receiving apparatus for receiving a desired signal by synthesizing a plurality of desired signal components incoming at a plurality of different timings and from a plurality of different directions at each timing while eliminating interference signals, which comprises:

• a plurality of receivers of which each receives one or more of said desired signal components incoming from different directions at the same time,
• wherein each of said plurality of receivers comprises a plurality of adaptive receiving units of which each updates a directivity thereof so as to match with an incoming direction of one of said desired signal components incoming from different directions at the same time,
• wherein each said receiver further comprises:
• a means for detecting a plurality of sections containing said incoming directions of said plurality of desired signal components;
• and
• a control means for controlling directivities of said plurality of adaptive receiving units in accordance with said detected sections containing said incoming directions of said plurality of desired signal components and said directivities of said plurality of adaptive receiving units,
• wherein said control means halts operations of adaptive receiving units having directivities not contained within any of said plurality of said sections containing said incoming directions.

A receiving apparatus for receiving a desired signal by synthesizing a plurality of desired signal components incoming at a plurality of different timings and from a plurality of different directions at each timing while eliminating interference signals, which comprises:

• a plurality of receivers of which each receives one or more of said desired signal components incoming from different directions at the same time,
• wherein each of said plurality of receivers comprises a plurality of adaptive receiving units of which each updates a directivity thereof so as to match with an incoming direction of one of said desired signal components incoming from different directions at the same time, wherein each said receiver further comprises:
• a means for detecting a plurality of sections containing said incoming directions of said plurality of desired signal components;
• and
• a control means for controlling directivities of said plurality of adaptive receiving units in accordance with said detected sections containing said incoming directions of said plurality of desired signal components and said directivities of said plurality of adaptive receiving units,
• wherein in case of an instantaneous disconnection occurred, said control means sets directivities of said plurality of adaptive receiving units at the time before said instantaneous disconnection as directivities for said plurality of adaptive receiving units at the time after said instantaneous disconnection.

A receiving apparatus for receiving a desired signal by synthesizing a plurality of desired signal components incoming at a plurality of different timings and from a plurality of different directions at each timing while eliminating interference signals, which comprises:

• a plurality of receivers of which each receives one of said desired signal components incoming from different directions at the same time,
• wherein each of said plurality of receivers comprises:
• an adaptive receiving unit which updates a directivity thereof so as to match with any one of incoming directions of said plurality of desired signal components;
• a means for detecting a plurality of sections containing said incoming directions of said plurality of desired signal components;
• and
• a control means for controlling the directivity of said adaptive receiving unit in accordance with said detected sections containing said incoming directions of said plurality of desired signal components and the directivity of said adaptive receiving unit,
• wherein in case of said directivity of said adaptive receiving unit being not contained within a section capable of obtaining desired signal components with relatively higher levels among said plurality of sections including said incoming directions, said control means sets a directivity representing the section concerned as the directivity of said adaptive receiving unit.

A receiving apparatus for receiving a desired signal by synthesizing a plurality of desired signal components incoming at a plurality of different timings and from a plurality of different directions at each timing while eliminating interference signals, which comprises:

• a plurality of receivers of which each receives one of said desired signal components incoming from different directions at the same time,
• wherein each of said plurality of receivers comprises:
• an adaptive receiving unit which updates a directivity thereof so as to match with any one of incoming directions of said plurality of desired signal components;
• a means for detecting a plurality of sections containing said incoming directions of said plurality of desired signal components;
• and
• a control means for controlling the directivity of said adaptive receiving unit in accordance with said detected sections containing said incoming directions of said plurality of desired signal components and the directivity of said adaptive receiving unit,
• wherein said control means sets a directivity representing a section capable of obtaining desired signal components with relatively higher levels among said plurality of sections containing said incoming directions as the directivity for said adaptive receiving unit at the beginning of operation of said apparatus.

A receiving apparatus for receiving a desired signal by synthesizing a plurality of desired signal components incoming at a plurality of different timings and from a plurality of different directions at each timing while eliminating interference signals, which comprises:

• a plurality of receivers of which each receives one of said desired signal components incoming from different directions at the same time,
• wherein each of said plurality of receivers comprises:
• an adaptive receiving unit which updates a directivity thereof so as to match with any one of incoming directions of said plurality of desired signal components;
• a means for detecting a plurality of sections containing said incoming directions of said plurality of desired signal components;
• and
• a control means for controlling the directivity of said adaptive receiving unit in accordance with said detected sections containing said incoming directions of said plurality of desired signal components and the directivity of said adaptive receiving unit,
• wherein in case of an instantaneous disconnection occurred, said control means sets a directivity of said adaptive receiving unit at the time before said instantaneous disconnection as a directivity for said adaptive receiving unit at the time after said instantaneous disconnection.

A CDMA adaptive antenna receiving apparatus which comprises:

• a plurality of antennas;
• a plurality of delay circuits of which each delays a plurality of signals received at said plurality of antennas by a certain time period in accordance with a time delay of a desired signal;
• a plurality of adaptive receiving means of which each receives an output of said delay circuit with antenna beams, each said antenna beam being adaptive to an output of said delay circuit and independent from the other antenna beams;
• a plurality of reception weight control means of which each controls reception weight vectors of each of said adaptive receiving means so that each of said adaptive receiving means receives desired signal components incoming from different directions at the same time by means of the antenna beams formed with the reception weight vectors;
• a first adder for synthesizing outputs from said plurality of adaptive receiving means;
• and
• a decision device for performing symbol decision for an output of said first adder, said decision device feeding a decided symbol therefrom to said plurality of adaptive receiving means.