METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA USING FREQUENCY DIVERSITY SCHEME

• US 20110129026A1
• Filed: 05/01/2009
• Published: 06/02/2011
• Est. Priority Date: 05/02/2008
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Song, Myung-Sun, Hwang, Sung-Hyun, Kim, Chang-Joo, Ko, Gwangzeen, UM, Jung-Sun
• Application Number:
  US12/990,565
• Publication Number:
  US 20110129026A1
• Time in Patent Office: Days
• US Class Current: 375/260
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/003 Arrangements for allocating sub-channels of the transmission path

Abstract

Provided are a transmitter and a receiver. The transmitter combines N data signals received from an encoded bit stream to generate N symbols; maps the N symbols to subcarriers that are spaced more than a coherent bandwidth apart; and receives and moves the N symbols, which are mapped to the subcarriers that are spaced more than a coherent bandwidth apart, to their own positions. The receiver demodulates N pieces of data using the N symbols received from the transmitter in a manner similar to that used by the transmitter.

Claims

1. A transmitter comprising:

a data combining unit combining N data signals received from an encoded bit stream to generate N symbols; and

a subcarrier allocating unit mapping the N symbols to subcarriers that are spaced more than a coherent bandwidth apart.

2. The transmitter of claim 1, wherein the subcarrier allocating unit uses a subcarrier allocation technique of an orthogonal frequency division multiplexing (OFDM) transmission scheme.

3. The transmitter of claim 1, wherein the data combining unit combines the N data signals to form N equations.

4. The transmitter of claim 1, further comprising at least one antenna.

5. The transmitter of claim 1, wherein the transmitter uses a multi-carrier transmission scheme or a single-carrier transmission scheme.

10. A system for transmitting and receiving data, the system comprising the transmitter of claim 1, and a receiver comprising:

a receiving unit receiving N symbols that are generated by combining N data signals and are mapped to subcarriers that are spaced more than a coherent bandwidth apart;

a subcarrier de-allocating unit moving the N symbols, which are mapped to the subcarriers that are spaced more than a coherent bandwidth apart, to their own original positions; and

a data separating unit separating N pieces of data from the N symbols, which are moved to their own positions and demodulating the N pieces of data.

6. A receiver comprising:

a receiving unit receiving N symbols that are generated by combining N data signals and are mapped to subcarriers that are spaced more than a coherent bandwidth apart;

a subcarrier de-allocating unit moving the N symbols, which are mapped to the subcarriers that are spaced more than a coherent bandwidth apart, to their own original positions; and

a data separating unit separating N pieces of data from the N symbols, which are moved to their own positions and demodulating the N pieces of data.

7. The receiver of claim 6, wherein the data separating unit separates the N pieces of data by deriving N equations from the N symbols that are generated by using the N data signals, and demodulates the N pieces of data.

8. The receiver of claim 6, wherein the receiver comprises at least one antenna.

9. The receiver of claim 6, wherein the receiver uses at least one of a multi-carrier transmission scheme and a single-carrier transmission scheme.

11. A method of transmitting and receiving data in a system for transmitting and receiving data using a frequency diversity scheme, the method comprising:

combining N data signals received from an encoded bit stream to generate N symbols;

mapping the N symbols to subcarriers that are spaced more than a coherent bandwidth apart;

receiving and moving the N symbols, which are mapped to the subcarriers that are spaced more than a coherent bandwidth apart, to their own positions; and

separating N pieces of data from the N symbols, which are moved to their own positions, and demodulating the N pieces of data.