WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD

• US 20110188479A1
• Filed: 02/17/2011
• Published: 08/04/2011
• Est. Priority Date: 09/28/2006
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Tanaka, Hirokazu, Jang, Kyungwoon, Yamasaki, Shoichiro
• Granted Patent: US 8,483,187 B2
• Time in Patent Office: Days
• US Class Current: 370/335
• CPC Class Codes: H04J 13/004 Orthogonal
• CPC Class Codes: H04J 13/0074 Code shifting or hopping

Abstract

A wireless transceiver device employing the code select code division multiple access method includes an encoder configured to execute error correction coding on data having a predetermined number of bits among data inputted from outside, and a code selector configured to select a code corresponding to the data subjected to correction coding. The wireless transceiver device performs wireless communication by use of the data inputted from the outside excluding the data having the predetermined number of bits and by use of the code.

Claims

1. A wireless transceiver device employing a code select code division multiple access method, comprising:

an encoder configured to execute error correction coding on data having a predetermined number of bits among data inputted from outside; and

a code selector configured to select a code corresponding to the data subjected to the correction coding,

wherein the wireless transceiver device performs wireless communication by use of the data inputted from the outside excluding the data having the predetermined number of bits and by use of the code.

2. A wireless transceiver device employing a code select code division multiple access method, comprising:

an serial-parallel converter configured to divide (k*q+n) bits data inputted from outside into k*q sets of bit series and n sets of beat groups;

an encoder configured to execute error correction coding on the bit series and output n pieces of parity series, each parity series having q bits data;

n pieces of code selectors configured to select a orthogonal code corresponding to the data subjected to the each parity series; and

n pieces of spreaders configured to diffuse the each orthogonal code by using one bit of the beat groups and to output a diffused data.

3. The wireless transceiver device according to claim 2, wherein the serial-parallel converter configured to rearrange the (k*q+n) bits data with a serial format and output the (k*q+n) bits data as parallel format data.

4. The wireless transceiver device according to claim 2, further comprising:

an inverse fast Fourier transformer configured to inverse fast Fourier transform for the diffused data and output a single transmission signal.

5. The wireless transceiver device according to claim 5, wherein the serial-parallel converter configured to rearrange the (k*q+n) bits data with a serial format and output the (k*q+n) bits data as parallel format data.

6. A wireless transceiver device employing a code select code division multiple access method, comprising:

a correlator configured to search for a code having the highest correlation with a piece of received data inputted from outside and to output soft decision data corresponding to the code; and

a decoder configured to execute error correction on the soft decision data thereby outputting the data as decoded data, and further to execute error correction coding on the decoded data, thereby outputting the data as correction parity data,

wherein the correlator outputs a decoded beat by use of the received data, the decoded data, and the correction parity data.

7. A wireless transceiver device employing a code select code division multiple access method, comprising:

a fast Fourier transformer configured to execute fast Fourier transform on a data inputted from outside and to output n pieces of data;

n pieces of correlator configured to execute inverse diffusion on the n pieces of data, to search for a code having the highest correlation with a piece of the n pieces of data and to output soft decision data corresponding to the code, each soft decision data having q bits; and

a decoder configured to execute error correction on the soft decision data thereby outputting the data as decoded data, and further to execute error correction coding on the decoded data, thereby outputting the data as correction parity data,

wherein the correlator outputs a decoded beat by use of the received data, the decoded data, and the correction parity data.

8. The wireless transceiver device according to claim 7, wherein each of the n pieces of correlator further comprising:

a plurality of sub-correlators configured to calculate the orthogonal code and beat group from the data.

9. A wireless communication method employing a code select code division multiple access method, comprising the steps of:

executing error correction coding on data having a predetermined number of bits among data inputted from outside;

selecting a code corresponding to the data subjected to the correction coding; and

performing wireless communication by use of the data inputted from the outside excluding the data having the predetermined number of bits and by use of the code.

10. A wireless communication method employing the code select code division multiple access method, comprising the steps of:

searching for a code having the highest correlation with a piece of received data inputted from outside;

outputting soft decision data corresponding to the code;

executing error correction of the soft decision data and outputting the data as decoded data;

executing error correction coding on the decoded data and outputting the data as correction parity data; and

outputting a decoded beat by use of the received data, the decoded data, and the correction parity data.