Dual antenna receiver for voice communications

• US 20050135516A1
• Filed: 12/19/2003
• Published: 06/23/2005
• Est. Priority Date: 12/19/2003
• Status: Abandoned Application

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Perets, Yoni, Javor, Ronald D.
• Application Number:
  US10/741,684
• Publication Number:
  US 20050135516A1
• Time in Patent Office: Days
• US Class Current: 375/347
• CPC Class Codes: H04B 7/0848 Joint weighting
• CPC Class Codes: H04B 7/0871 using different reception schemes, at least one of them being a diversity reception scheme
• CPC Class Codes: H04B 7/0874 using subgroups of receive antennas

Abstract

A dual antenna receiver utilizes spatio-temporal processing in a packet-based network.

Claims

1. A method comprising:

receiving two signals from two antennas;

converting the two signals to baseband;

digitizing the two signals; and

linearly combining the two signals to receive voice packets.

2. The method of claim 1 further comprising transmitting using one of the two antennas.

3. The method of claim 1 wherein linearly combining comprises applying a matched-filter solution for channels associated with the two antennas.

4. The method of claim 1 wherein linearly combining comprises selecting combining coefficients to increase a signal to interference ratio (SIR).

5. The method of claim 1 wherein linearly combining comprises selecting combining coefficients to whiten spatial and temporal interference.

6. The method of claim 1 wherein linearly combining comprises selecting combining coefficients to reduce mean squared error (MSE).

7. The method of claim 1 wherein linearly combining the two signals to receive voice packets comprises:

linearly combining the two signals to form General Packet Radio Service (GPRS) packets; and

converting GPRS packets to voice packets.

8. A method comprising:

receiving first and second General Packet Radio Service (GPRS) signals using two antennas;

converting the first and second signals to two baseband signals;

digitizing the two baseband signals;

linearly combining the two baseband signals; and

converting received GPRS packets to voice packets.

9. The method of claim 8 wherein linearly combining comprises applying a matched-filter solution for channels associated with the two antennas.

10. The method of claim 8 wherein linearly combining comprises selecting combining coefficients to increase a signal to interference ratio (SIR).

11. The method of claim 8 wherein linearly combining comprises selecting combining coefficients to whiten spatial and temporal interference.

12. The method of claim 8 wherein linearly combining comprises selecting combining coefficients to reduce mean squared error (MSE).

13. An apparatus comprising:

a first antenna and a first baseband conversion unit coupled to the first antenna to produce a first baseband signal;

a first analog-to-digital converter to convert the first baseband signal into a first digital sample stream;

a second antenna and a second baseband conversion unit coupled to the second antenna to produce a second baseband signal;

a second analog-to-digital converter to convert the second baseband signal into a second digital sample stream; and

a spatio-temporal processing unit to linearly combine the first and second digital sample streams to receive a voice signal in a General Packet Radio Service (GPRS) network.

14. The apparatus of claim 13 wherein the spatio-temporal processing unit is adapted to linearly combine the first and second digital sample streams by applying a matched-filter solution for channels associated with the two antennas.

15. The apparatus of claim 13 wherein the spatio-temporal processing unit is adapted to linearly combine the first and second digital sample streams using coefficients to increase a signal to interference ratio (SIR).

16. The apparatus of claim 13 wherein the spatio-temporal processing unit is adapted to linearly combine the first and second digital sample streams using coefficients to whiten spatial and temporal interference.

17. The apparatus of claim 13 wherein the spatio-temporal processing unit is adapted to linearly combine the first and second digital sample streams using coefficients to reduce mean squared error (MSE).

18. The apparatus of claim 13 further comprising an antenna switch to transmit using one antenna.

19. An electronic system comprising:

a first antenna and a first baseband conversion unit coupled to the first antenna to produce a first baseband signal;

a first analog-to-digital converter to convert the first baseband signal into a first digital sample stream;

a second antenna and a second baseband conversion unit coupled to the second antenna to produce a second baseband signal;

a second analog-to-digital converter to convert the second baseband signal into a second digital sample stream;

a spatio-temporal processing unit to linearly combine the first and second digital sample streams to receive a voice signal in a General Packet Radio Service (GPRS) network; and

a color display device.

21. The electronic system of claim 21 wherein the spatio-temporal processing unit is adapted to linearly combine the first and second digital sample streams using coefficients to increase a signal to interference ratio (SIR).

20. The electronic system of claim 21 wherein the spatio-temporal processing unit is adapted to linearly combine the first and second digital sample streams by applying a matched-filter solution for channels associated with the two antennas.

22. The electronic system of claim 21 wherein the spatio-temporal processing unit is adapted to linearly combine the first and second digital sample streams using coefficients to whiten spatial and temporal interference.