Dual mode communication systems and methods

• US 20050232216A1
• Filed: 04/13/2005
• Published: 10/20/2005
• Est. Priority Date: 04/14/2004
• Status: Active Grant

• Current Assignee: Intellectual Ventures I LLC (Intellectual Ventures LLC)
• Original Assignee: Xocyst Transfer AG LLC (Intellectual Ventures LLC)
• Inventors: Webster, Mark A., Seals, Michael J.
• Granted Patent: US 7,729,233 B2
• Time in Patent Office: Days
• US Class Current: 370/343
• CPC Class Codes: H04B 7/04 using two or more spaced independent antennas
• CPC Class Codes: H04B 7/0404 the mobile station comprising multiple antennas, e.g. to provide uplink diversity
• CPC Class Codes: H04B 7/0697 using spatial multiplexing
• CPC Class Codes: H04J 9/00 Multiplex systems in which each channel is represented by a different type of modulation of the carrier
• CPC Class Codes: H04L 1/04 using frequency diversity
• CPC Class Codes: H04L 1/06 using space diversity
• CPC Class Codes: H04L 27/2601 Multicarrier modulation systems

Abstract

Embodiments of dual mode communication systems and methods are disclosed. On system embodiment, among others, comprises logic configured to perform spatial multiplexing and expanded bandwidth signaling to data.

Claims

1. A method for operating a communication system in a dual mode, comprising:

providing spatial multiplexing and expanded bandwidth signaling for a plurality of data; and

transmitting the plurality of data from a first transmit antenna and a second transmit antenna.

2. The method of claim 1, wherein transmitting comprises transmitting the plurality of data from the first antenna at a first carrier frequency and from the second transmit antenna at a second carrier frequency, wherein the first carrier frequency equals the second carrier frequency.

3. The method of claim 2, further comprising receiving the plurality of data at the first carrier frequency and the second carrier frequency.

4. The method of claim 3, further comprising separating the received plurality of data.

5. The method of claim 1, wherein transmitting comprises transmitting the plurality of data from the first antenna at a first carrier frequency and from the second transmit antenna at a second carrier frequency, wherein the first carrier frequency is different from the second carrier frequency.

6. The method of claim 5, wherein transmitting comprises transmitting the plurality of data in adjacent channels.

7. The method of claim 5, wherein transmitting comprises transmitting the plurality of data in non-adjacent channels.

8. The method of claim 5, further comprising receiving and filtering the plurality of data at the first carrier frequency and the second carrier frequency.

9. A dual mode communication system, comprising:

a logic configured to perform spatial multiplexing and expanded bandwidth signaling to data.

10. The system of claim 9, wherein the logic is configured to transmit spatial multiplexed data at a single carrier frequency.

11. The system of claim 10, further comprising receive logic configured to receive the spatial multiplexed data.

12. The system of claim 11, further comprising a signal separator configured to separate the received data.

13. The system of claim 9, wherein the logic is configured to transmit expanded bandwidth data at a first carrier frequency and a second carrier frequency.

14. The system of claim 13, further comprising receive logic configured to receive and recover the expanded bandwidth data at the first carrier frequency and the second carrier frequency.

15. The system of claim 14, wherein the receive logic comprises at least one receive filter.

16. The system of claim 9, wherein the logic is further configured to provide expanded bandwidth signaling over adjacent channels.

17. The system of claim 9, wherein the logic is further configured to provide expanded bandwidth signaling over non-adjacent channels.

18. The system of claim 9, wherein the logic is configured in hardware, software, or a combination of hardware and software.

19. The system of claim 9, wherein the logic is configured in digital circuitry, analog circuitry, or a combination of digital and analog circuitry.

20. A dual mode communication system, comprising:

means for performing spatial multiplexing and expanded bandwidth signaling for a plurality of data; and

means for transmitting the plurality of data from a first transmit antenna and a second transmit antenna.

21. The system of claim 20, further comprising means for receiving the plurality of data at single carrier frequency.

22. The system of claim 21, further comprising means for separating the received plurality of data.

23. The system of claim 20, further comprising means for receiving the plurality of data at a first carrier frequency and a second carrier frequency.

24. The system of claim 20, wherein the means for transmitting comprises means for transmitting the plurality of data at a single carrier frequency.

25. The system of claim 20, wherein the means for transmitting comprises means for transmitting the plurality of data at a first carrier frequency and a second carrier frequency.