# US 7,613,226 B2 · Method and apparatus for transferring signals in a wireless communication system

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- Number: US 7,613,226 B2
- Document ID: US7613226B2
- Status: Granted
- Kind: B2
- Application number: 12/143,338
- Filed: 2008-06-20
- Published: 2008-11-20
- Granted: 2009-11-03
- Earliest claimed: 2001-11-29
- Assignees: InterDigital Technology Corporation
- Inventors: Ariela Zeira
- Web page: https://patentgrep.com/patent/US7613226B2

## CPC

- H04B 7/0613: {using simultaneous transmission (H04B7/0686 takes precedence)}
- H04B 7/0837: {using pre-detection combining (H04B7/0868 takes precedence)}
- H04L 25/0204: {of multiple channels}
- H04L 25/0242: {using matrix methods}
- H04L 2025/03375: {Passband transmission}
- H04B: TRANSMISSION
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

Data is transferred in a wireless communication system, such as a wireless spread spectrum communication system. A plurality of transmitting antennas are provided. Data is encoded to produce a plurality of data streams for each of the plurality of codes. The plurality of data streams are spread with the plurality of spreading codes, and for each transmitting antenna, one of the spread data streams of each code together is combined to produce a spread data vector. Each transmitting antenna transmits its spread data vector. The transmitted spread data vectors are received by each of a plurality of receiving antennas as a received version, and the data is recovered using the received versions.

## Claims

### Claim 1

A method for transferring data, comprising:
providing a plurality of transmitting antennas;
encoding data to produce a plurality of data streams for each of a plurality of spreading codes, wherein each of the plurality of data streams for each of the plurality of spreading codes is associated with one of the plurality of transmitting antennas;
spreading each of the plurality of data streams with an associated spreading code;
combining each data stream associated with one of the plurality of transmitting antennas, wherein the each of the combined data streams are spread by each of the plurality of spreading codes to produce a plurality of spread data vectors, each spread data vector associated with one of the plurality of transmitting antennas; and
transmitting each spread data vector using the transmitting antenna associated with the spread data vector to a plurality of receiving antennas as a received version.

### Claim 2

A base station comprising:
a plurality of transmitting antennas configured to transmit signals;
a multicode vector encoder configured to encode a plurality of data streams for each of a plurality of spreading codes, wherein each of the plurality of data streams for each of the plurality of spreading codes is associated with one of the plurality of transmitting antennas;
a spreading device configured to spread each of the plurality of data streams with an associated spreading code;
a combiner configured to combine each data stream associated with one of the plurality of transmitting antennas, wherein the each of the combined data streams are spread by each of the plurality of spreading codes to produce a plurality of spread data vectors, each spread data vector associated with one of the plurality of transmitting antennas; and
a modulator configured to modulate each of the plurality of data vectors to radio frequency.

### Claim 3 (depends on 2)

The base station of claim 2, wherein the plurality of transmitting antennas have an angle spread in the range of 1 to 10 degrees.

### Claim 4 (depends on 2)

The base station of claim 2, wherein the plurality of transmitting antennas are configured to transmit using a code division multiple access (CDMA) interface.