Wireless communication apparatus and wireless communication method

A wireless communication device and modulation method technology, applied in multiplexing communication, diversity/multi-antenna systems, electrical components, etc., can solve the problems of reduced coding block length and reduced error correction capability, etc.

Inactive Publication Date: 2008-08-20
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Here, in error correction coding such as turbo code (Turbo Code), if the number of bits that can be transmitted by one resource block is reduced and the length of the coded block is reduced, the error correction capability will be significantly reduced.

Method used

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  • Wireless communication apparatus and wireless communication method
  • Wireless communication apparatus and wireless communication method
  • Wireless communication apparatus and wireless communication method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0037] FIG. 1 shows the configuration of a radio communication device 100 on the transmitting side according to the present embodiment. In addition, FIG. 2 shows the configuration of the wireless communication device 200 on the receiving side of the present embodiment. The radio communication apparatus 100 divides a plurality of subcarriers constituting an OFDM symbol that is a multicarrier signal into a plurality of resource blocks, and performs adaptive control for each of the plurality of resource blocks. In addition, the radio communication device 200 receives a multicarrier signal transmitted after performing adaptive control for each resource block in the radio communication device 100 .

[0038] In the wireless communication device 100 shown in FIG. 1 , the coding section 101 performs error correction coding on the transmission data (bit string) at the common coding rate of all resource blocks input from the adaptive control section 113, and outputs it to the S / P (ser...

Embodiment approach 2

[0069]In this embodiment, adaptive control is performed using INR (Interference to NoiseRatio) in addition to SINR.

[0070] FIG. 7 shows the configuration of a wireless communication device 400 on the receiving side in this embodiment. In FIG. 7 , the same components as those in Embodiment 1 ( FIG. 2 ) are denoted by the same reference numerals, and description thereof will be omitted.

[0071] Channel estimation section 205 calculates channel estimation values ​​for each subcarrier using pilot symbols for each subcarrier. These channel estimation values ​​are input to the channel correction unit 206 . Furthermore, channel estimation section 205 detects the signal power value (S), interference power value (I), and noise power value (N) of the pilot symbol for each subcarrier, and outputs them to SINR calculation section 213 . Furthermore, channel estimation section 205 outputs the interference power value (I) and the noise power value (N) to INR calculation section 401 .

...

Embodiment approach 3

[0082] The present embodiment is different from the first embodiment in that bit repetition is performed compared to the symbol repetition performed in the first embodiment.

[0083] FIG. 11 shows the processing flow of the transmitting side in this embodiment. The difference between the processing flow in FIG. 11 and the processing flow in Embodiment 1 ( FIG. 6 ) is that the processing order of adaptive modulation (ST18-1 to 18-n) and repetition (ST19-1 to 19-n) is reversed. Adaptive modulation (ST18-1 to 18-n) is performed after repetition (ST19-1 to 19-n). Therefore, bit repetition is performed in ST 19 - 1 to 19 - n in FIG. 11 , while symbol repetition is performed in ST 19 - 1 to 19 - n in FIG. 6 .

[0084] FIG. 12 shows the configuration of radio communication device 300 on the transmitting side in this embodiment. Corresponding to the processing flow in FIG. 11 , wireless communication device 300 employs a configuration in which repeating section 104 is arranged in a ...

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Abstract

Disclosed is a radio communication device capable of obtaining the maximum throughput while satisfying the required reception quality in multi-carrier communication. In this device, the coding unit (101) performs error correction coding on multiple resource blocks at the same coding rate, and the modulation units (103-1~103-n) code the coded data according to each block of resource blocks 1~n Perform modulation to generate data symbols, repeating units (104-1 to 104-n) repeat the data symbols input from the modulation unit (103) for each block of resource blocks 1 to n to generate a plurality of identical data symbols Yuan. That is, in the present invention, the coding rate is the same for all the plurality of resource blocks, but the modulation scheme and the number of repetitions are different for each resource block.

Description

technical field [0001] The present invention relates to a wireless communication device and a wireless communication method. Background technique [0002] In recent years, in wireless communication, especially mobile communication, various kinds of information such as images and data have become objects of transmission in addition to voice. It is predicted that the demand for higher-speed transmission will further increase in the future. In order to perform high-speed transmission, wireless transmission technologies that utilize limited frequency resources more efficiently and realize high transmission efficiency are sought. [0003] OFDM (Orthogonal Frequency Division Multiplexing; Orthogonal Frequency Division Multiplexing) is one wireless transmission technology capable of meeting such demands. OFDM is a multi-carrier transmission technology that uses multiple sub-carriers to transmit data in parallel. It is widely known for its high frequency utilization efficiency, red...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J11/00H04B7/02
Inventor 栗谦一西尾昭彦今村大地三好宪一荒牧隆平松胜彦
Owner PANASONIC CORP
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