Systems and methods for recovering bandwidth in a wireless communication network

• US 20080107199A1
• Filed: 10/29/2007
• Published: 05/08/2008
• Est. Priority Date: 12/06/2001
• Status: Abandoned Application

• Current Assignee: Intellectual Ventures Holding 73 LLC (Intellectual Ventures LLC)
• Original Assignee: Intellectual Ventures Holding 73 LLC (Intellectual Ventures LLC)
• Inventors: Lakkis, Ismail
• Application Number:
  US11/980,458
• Publication Number:
  US 20080107199A1
• Time in Patent Office: Days
• US Class Current: 375/260
• CPC Class Codes: H04B 1/71637 Receiver aspects H04B1/7183 takes precedence
• CPC Class Codes: H04B 1/719 Interference-related aspects
• CPC Class Codes: H04L 27/2601 Multicarrier modulation systems

Abstract

A method of communicating over a wideband communication channel divided into a plurality of sub-channels comprises dividing a single serial message intended for one of the plurality of communication devices into a plurality of parallel messages, encoding each of the plurality of parallel messages onto at least some of the plurality of sub-channels, and transmitting the encoded plurality of parallel messages to the communication device over the wideband communication channel.

Claims

1. A transmitter configured for programmable multi-band communication, the transmitter comprising:

a splitting circuit configured to receive a serial data stream and to split the serial data stream into a plurality of parallel data streams;

a phase shifter coupled with the splitting circuit, the phase shifter configured to shift the phase of at least some of the plurality of parallel data streams;

a combiner coupled with the phase shifter, the combiner configured to combine the plurality of parallel data streams into a combined data stream; and

a controller configured to select which of the plurality of data streams will be used for communication by the transmitter.

2. The transmitter of claim 1, wherein the splitting circuit comprises a serial to parallel converter.

3. The transmitter of claim 1, wherein the phase shifter comprises a plurality of multipliers, each of the plurality of multipliers configured to multiply each of the plurality of data streams with a phase shifting signal.

4. The transmitter of claim 1, further comprising a plurality of pulse shapers configured to shape the phase shifted data streams.

5. The transmitter of claim 1, wherein the combiner comprises an adder.

6. The transmitter of claim 1, wherein the splitting circuit comprises an IFFT.

7. The transmitter of claim 1, wherein the combiner comprises a plurality of poly-phased filters.

8. The transmitter of claim 1, wherein the combined data stream comprises complex data.

9. The transmitter of claim 1, wherein the transmitter further comprises an encoder configured to encode the complex data into values of 1, 0, and −

1.

10. The transmitter of claim 9, wherein the encoder is configured to encode the complex data into a real and an imaginary data streams.

11. The transmitter of claim 10, wherein each of the real and imaginary data streams comprises two data streams, wherein one of the data streams is used to indicate a value of 1, and the other data streams is used to indicate a value of −

1.

12. A transmitter configured for programmable multi-band communication, the transmitter comprising:

a splitting circuit configured to receive a serial data stream and to split the serial data stream into a plurality of parallel data streams;

a phase shifter coupled with the splitting circuit, the phase shifter configured to shift the phase of at least some of the plurality of parallel data streams;

a combiner coupled with the phase shifter, the combiner configured to combine the plurality of parallel data streams into a combined data stream, the combined data stream comprising complex data; and

an encoder configured to encode the complex data of the combined data stream into values of 1, 0, and −

1.

13. The transmitter of claim 12, wherein the controller is configured to encode the serial data stream in order to achieve a maximum data rate.

14. The transmitter of claim 12, wherein the splitting circuit comprises a serial to parallel converter.

15. The transmitter of claim 12, wherein the phase shifter comprises a plurality of multipliers, each of the plurality of multipliers configured to multiply each of the plurality of data streams with a phase shifting signal.

16. The transmitter of claim 12, further comprising a plurality of pulse shappers configured to shape the phase shifted data streams.

17. The transmitter of claim 12, wherein the combiner comprises an adder.

18. The transmitter of claim 12, wherein the splitting circuit comprises an IFFT.

19. The transmitter of claim 12, wherein the combiner comprises a plurality of poly-phased filters.