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Transfer method, transfer system, transmitter apparatus and receiver apparatus

A technology for a receiving device and a transmitting device, which is applied in the directions of transmission systems, digital transmission systems, modulated carrier systems, etc., can solve problems such as difficult application and unpublished solutions.

Inactive Publication Date: 2009-08-19
OSAKA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to apply OFDM (Orthogonal Frequency Division Multiplex) to the case where the portable terminal is used as the transmission device by balancing power consumption.
In addition, none of the techniques described in Patent Document 1 and Non-Patent Document 1 disclose information for solving this problem.

Method used

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  • Transfer method, transfer system, transmitter apparatus and receiver apparatus
  • Transfer method, transfer system, transmitter apparatus and receiver apparatus
  • Transfer method, transfer system, transmitter apparatus and receiver apparatus

Examples

Experimental program
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Embodiment approach 1

[0056] Embodiments of the present invention will be described below with reference to the drawings. figure 1It is an explanatory diagram showing the outline of the transmission system. S in the figure is a transmission system, which is configured including a mobile phone 10 as one communication device including a transmission device and a reception device, and a base station 20 as another communication device. The user of the mobile phone 10 can communicate with the mobile phone 10 of another user by sending and receiving information with the base station 20 . Next, a method (uplink) for transmitting a digital signal from the transmitting device of the mobile phone 10 to the receiving device of the base station 20 will be described, but it can also be applied to the method of transmitting a digital signal from the transmitting device of the base station 20 to the receiving device of the mobile phone 10. (downlink). Furthermore, in this embodiment, a mode in which the transmi...

Embodiment approach 2

[0085] Embodiment 2 relates to a method of distributing spectrum allocation based on allocation information of prescribed rules. Figure 10 It is a block diagram showing the hardware configuration of the transmission device 1 according to the second embodiment. Figure 11 It is a block diagram showing the hardware configuration of the receiving device 2 according to the second embodiment. In addition to the configuration of the first embodiment, the transmitting device 1 further includes an arrangement information setting unit 151 connected to the arrangement unit 15 . Furthermore, in addition to the configuration of the first embodiment, the receiving device 2 further includes a configuration information setting unit 271 connected to the coupling unit 27 . The configuration information setting unit 151 in the transmission device 1 stores the configuration information in an internal memory (not shown). This allocation information is information related to predetermined rules...

Embodiment approach 3

[0092] Embodiments 1 and 2 described the method of using the main frequency band and the auxiliary frequency band, but Embodiment 3 relates to the method of using the use frequency band within the main frequency band. Figure 13 It is a block diagram showing the hardware configuration of the transmission device 1 according to the third embodiment. in addition, Figure 14 It is a block diagram showing the hardware configuration of the receiving device 2 according to the third embodiment.

[0093] Since transmission device 1 according to Embodiment 3 uses only the main frequency band, spectrum mapping unit 181 , IDFT unit 191 , and CP adding unit 101 relating to the main frequency band are provided between arrangement unit 15 and multiplexing unit 114 . The arranging unit 15 disperses and arranges the frequency spectrum in the use frequency band within the main frequency band divided in advance by the frequency band setting unit 16 . The used frequency band setting unit 25 of ...

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Abstract

To provide a transfer method and others wherein unused areas are efficiently utilized to achieve a high-speed communication. In a transmitter apparatus, a modulated digital signal is converted to the spectra of frequency bands by a converting part. The converted spectra are further distributed into a plurality of used bands established in main and auxiliary bands. The digital signal, which is related to the spectra in the main and auxiliary bands including the spectra as distributed by a distributing part, is transmitted by a transmitting part to a receiver apparatus. A receiving part of the receiver apparatus receives the transmitted digital signal related to the spectra in the main and auxiliary bands. The spectra in the used bands as established by a used-band establishing part are extracted by an extracting part. Finally, the spectra as extracted by the extracting part are combined by a combining part.

Description

technical field [0001] The present invention relates to a transmission method, a transmission system, a transmission device and a reception device for transmitting and receiving modulated digital signals between a transmission device and a reception device. Background technique [0002] Applied to various wireless communication systems such as mobile phones, wireless LAN (Local Area Network), WiMAX (Worldwide Interoperability for Microwave Access) and broadband wireless LAN. As the number of such wireless communication systems increases, there arises a problem that available frequency resources become tight. In particular, the intensive use of frequency bands below 6 GHz for terrestrial digital broadcasting, mobile phones, and the like is a serious problem throughout the country. In order to solve this problem, research on cognitive wireless is conducted. [0003] Cognitive wireless is a new technology proposal that seeks to combine multiple wireless systems while preventi...

Claims

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Application Information

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IPC IPC(8): H04J1/00H04J11/00H04L27/01
CPCH04L1/0001H04L27/2608H04L5/0044
Inventor 三瓶政一宫本伸一
Owner OSAKA UNIV
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