Multi-antenna apparatus multi-antenna reception method, and multi-antenna transmission method

• US 20040095278A1
• Filed: 08/21/2003
• Published: 05/20/2004
• Est. Priority Date: 12/28/2001
• Status: Abandoned Application

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Miya, Kazuyuki, Kanemoto, Hideki
• Application Number:
  US10/468,764
• Publication Number:
  US 20040095278A1
• Time in Patent Office: Days
• US Class Current: 343/700.0MS
• CPC Class Codes: H04B 7/0842 Weighted combining
• CPC Class Codes: H04B 7/10 Polarisation diversity; Directional diversity

Abstract

The present invention comprises a pair of antenna elements ANTV (111) and ANTH (112) provided apart by a predetermined distance which receive polarizations orthogonal to each other, a reception processing sections 211a, 211b and 222 that apply demodulation and combination processing to the signals received through the antenna elements, and can thereby make compatible effects of polarized diversity and effects of spatial diversity

Claims

1. A multi-antenna apparatus comprising:

a pair of antenna elements provided apart by a predetermined distance which receive polarizations orthogonal to each other; and

a reception processing section that performs demodulation and combination processing on signals received through said antenna elements.

2. A multi-antenna apparatus comprising:

a pair of antenna elements provided apart by a predetermined distance which transmit polarizations orthogonal to each other; and

a transmission processing section that performs modulation processing on a predetermined signal and then supplies the modulated signal to said antenna elements.

3. A multi-antenna apparatus comprising:

a first antenna unit having antenna elements which receive vertical polarization and horizontal polarization;

a second antenna unit provided apart by a predetermined distance from said first antenna unit having antenna elements which receive vertical polarization and horizontal polarization; and

a reception processing section that applies demodulation and combination processing to the vertical polarization received by said first antenna unit and the horizontal polarization received by said second antenna unit.

4. The multi-antenna apparatus according to claim 3, wherein said first and second antenna unit each include a plurality of said antenna elements, said multi-antenna apparatus further comprising:

a first directional control section that multiplies the plurality of vertical polarizations received by said plurality of antenna elements of said first antenna unit by adaptive weights and then combines said multiplication results to generate a received signal with adaptive directivity;

a second directional control section that multiplies the plurality of horizontal polarizations received by said plurality of antenna elements of said second antenna unit by adaptive weights and then combines said multiplication results to generate a received signal with adaptive directivity; and

a combination section that combines the received signals with adaptive directivity generated by said first and second directional control sections.

5. A multi-antenna apparatus comprising:

a first antenna unit having antenna elements which transmit vertical polarization and horizontal polarization;

a second antenna unit having antenna elements provided apart by a predetermined distance from said first antenna unit which transmit vertical polarization and horizontal polarization;

a first transmission section that transmits a modulated signal from said first antenna unit as vertical polarization; and

a second transmission section that transmits said modulated signal from said second antenna unit as horizontal polarization.

6. A multi-antenna apparatus comprising:

a first antenna unit having a plurality of antenna elements that transmit/receive vertical polarization and horizontal polarization;

a second antenna unit having a plurality of antenna elements provided apart by a predetermined distance from said first antenna unit which receive vertical polarization and horizontal polarization;

a first directional control section that multiplies the plurality of vertical polarizations received by said plurality of antenna elements of said first antenna unit by adaptive weights, then combines said multiplication results to generate a received signal with adaptive directivity;

a second directional control section that multiplies the plurality of horizontal polarizations received by said plurality of antenna elements of said second antenna unit by adaptive weights, then combines said multiplication results to generate a received signal with adaptive directivity;

a combination section that combines the received signals with adaptive directivity generated by said first and second directional control sections;

a first transmission section that transmits the result of a multiplication of the modulated signals by the adaptive weights multiplied on said vertical polarization from said first antenna unit as vertical polarization; and

a second transmission section that transmits the result of a multiplication of the modulated signals by the adaptive weights multiplied on said horizontal polarization from said second antenna unit as horizontal polarization.

7. A multi-antenna apparatus comprising:

a first antenna element group that has at least one pair of antenna elements which receive vertical polarization and horizontal polarization;

a second antenna element group having at least one pair of antenna elements provided apart by a predetermined distance from said first antenna element which receive vertical polarization and horizontal polarization; and

a reception processing section that applies demodulation and combination processing to the vertical polarization received by said first antenna element group and the horizontal polarization received by said second antenna element group.

8. A multi-antenna apparatus comprising:

a first antenna element group that has at least one pair of antenna elements which transmit vertical polarization and horizontal polarization;

a second antenna element group having at least one pair of antenna elements provided apart by a predetermined distance from said first antenna element which transmit vertical polarization and horizontal polarization;

a first transmission section that transmits the modulated signal from said first antenna element group as vertical polarization; and

a second transmission section that transmits said modulated signal from said second antenna element group as horizontal polarization.

9. A multi-antenna apparatus comprising:

a first antenna element group having a plurality of antenna elements which receive vertical polarization and horizontal polarization;

a second antenna element group having a plurality of antenna elements provided apart by a predetermined distance from said first antenna element group which receive vertical polarization and horizontal polarization; and

a reception processing section that applies demodulation and combination processing to the vertical polarizations received by said first antenna element group and the horizontal polarizations received by said second antenna element group.

10. A multi-antenna apparatus comprising:

a first antenna element group having a plurality of antenna elements which transmit vertical polarization and horizontal polarization;

a second antenna element group having a plurality of antenna elements provided apart by a predetermined distance from said first antenna element group which transmit vertical polarization and horizontal polarization;

a first transmission section that transmits a modulated signal from said first antenna element group as vertical polarization; and

a second transmission section that transmits said modulated signal from said second antenna element group as horizontal polarization.

11. A multi-antenna reception method comprising:

a first demodulating step of demodulating vertical polarization received by a first antenna unit having antenna elements which receive vertical polarization and horizontal polarization;

a second demodulating step of demodulating horizontal polarization received by a second antenna unit having antenna elements provided apart by a predetermined distance from said first antenna unit which receive vertical polarization and horizontal polarization; and

a combining step of combining signals demodulated in said first and second demodulating steps.

12. A transmission method for a multi-antenna including a first antenna unit having antenna elements which transmit vertical polarization and horizontal polarization and a second antenna unit having antenna elements provided apart by a predetermined distance from said first antenna unit which transmit vertical polarization and horizontal polarization, comprising:

a transmitting step of transmitting a modulated signal from said first antenna unit as vertical polarization and transmitting the modulated signal from said second antenna unit as horizontal polarization.