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Transmitter, transmitting method, receiver, and receiving method

A technology of a sending device and a receiving device, which is applied to the separation device of the transmission path, the transmission system, the equalizer, etc., can solve the problem of reducing the overall throughput, and achieve the effect of reducing the transmission efficiency and preventing the reduction of the overall throughput.

Inactive Publication Date: 2010-03-31
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if there is a symbol error within a packet due to the influence of delayed waves, the overall throughput decreases

Method used

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  • Transmitter, transmitting method, receiver, and receiving method
  • Transmitter, transmitting method, receiver, and receiving method
  • Transmitter, transmitting method, receiver, and receiving method

Examples

Experimental program
Comparison scheme
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Embodiment approach 1

[0035] figure 2 The configuration of the main part of the transmission device according to the embodiment of the present invention is shown. figure 2 The structure of the transmission device 100 shown includes: a selector unit 110, first-order modulation units 120-1 and 120-2, a data rearrangement unit 130, a time-frequency conversion unit 140, a mapping unit 150, and a frequency-time conversion unit 160 and a wireless processing unit 170 .

[0036] The selector unit 110 distributes input data to the first order modulation units 120-1 and 120-2.

[0037] The first-order modulation units 120-1 and 120-2 support modulation modes of different modulation orders, respectively perform first-order modulation on the input data allocated by the selector unit 110, and output the obtained first-order modulation signals to the data rearrangement unit 130.

[0038] The data rearrangement unit 130 rearranges the primary modulation signals generated by the primary modulation units 120-1...

Embodiment approach 2

[0064] Figure 4 It is a block diagram showing the configuration of main parts of the transmission device 300 according to the embodiment of the present invention. In the description of this embodiment, for the figure 2 The same structural parts are given the same reference numerals, and descriptions thereof are omitted.

[0065] The difference from Embodiment 1 is that Figure 4 The selector unit 110 is deleted, and the data rearranging unit 310 is included in place of the data rearranging unit 130 in the transmitting device 300 of .

[0066] The data rearrangement unit 310 rearranges the first-order modulation signals generated by the first-order modulation units 120-1 and 120-2 according to the quality requirements of the input data input to the first-order modulation units 120-1 and 120-2, and generates 1SC - Time domain signal of FDMA symbol length.

[0067] Specifically, the data rearranging unit 310 preferentially allocates the first-order modulation signal corresp...

Embodiment approach 3

[0073] Figure 6 It is a block diagram showing the configuration of main parts of the transmission device 500 according to the embodiment of the present invention. In the description of this embodiment, for the figure 1 The same structural parts are given the same reference numerals, and descriptions thereof are omitted.

[0074] The difference from Embodiment 1 is that Figure 6 The selector unit 110 is deleted, and the data rearranging unit 510 is included in place of the data rearranging unit 130 in the transmitting apparatus 500 of .

[0075] The data rearrangement unit 510 rearranges these first-order modulation signals according to the wireless transmission characteristics corresponding to the first-order modulation signals generated by the first-order modulation units 120-1 and 120-2, and generates a time domain of 1SC-FDMA symbol length Signal.

[0076] Specifically, data rearranging section 510 preferentially allocates primary modulation signals with strong wirele...

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Abstract

A transmitter which alleviates the effect of delayed waves without reducing the transmission efficiency to prevent degradation in overall throughput. In the transmitter for transmitting the SC-FDMA signals, a data realignment section (130) assigns a signal with better error characteristics or a signal requiring no high error characteristics toward the end of a symbol length of the SC-FDMA signal to obtain a time-region signal, and a time / frequency converter section (140) forms the SC-FDMA signal using the time-region signal. This allows the signal to be realigned by selecting the symbol end subject to the effect of delayed waves and the symbol center less subject to the effect of delayed waves out of the SC-FDMA symbol length. As a result, the influence of an error at the symbol end subject to the effect of delayed waves on the overall packet is reduced to prevent degradation in overall throughput.

Description

technical field [0001] The present invention relates to a transmitting device, a transmitting method, a receiving device and a receiving method for single-carrier communication. Background technique [0002] In recent years, in mobile communications, especially in uplink radio access from a mobile station to a base station, single-carrier transmission has attracted attention. [0003] The standardization body 3GPP (3rd Generation Partnership Project: 3rd Generation Partnership Project) is studying 3GPP LTE (Long Term Evolution: Long Term Evolution) for the purpose of realizing a further improved system of the current 3rd generation mobile phone. [0004] An SC-FDMA (Single Carrier Frequency Division Multiple Access) scheme is adopted as an uplink communication scheme in the LTE system (see Non-Patent Document 1 and Non-Patent Document 2). [0005] Non-Patent Document 2 discloses a method of performing DFT (Discrete Fourier Transform: Discrete Fourier Transform) on a first-o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J11/00H04L27/01
CPCH04L5/0083H04L5/0044H04L5/006H04L5/0007H04J11/00
Inventor 关裕太
Owner PANASONIC CORP
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