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Communication device and communication method

A communication device and wireless device technology, applied in wireless communication, communication between multiple stations, heating methods, etc., can solve the problem of inability to perform baseband signal and AGC signal amplitude and phase offset, increase in device scale, and must be interrupted Communication and other issues

Inactive Publication Date: 2001-07-18
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0039] However, in the conventional apparatus, there is a problem that, at the time of transmission, it is not possible to calculate the transmission power amplifiers 15, 16 necessary for correcting the amplitude and phase shift of the transmission signal in communication with the mobile station apparatus. The measurement of the characteristic error of , in order to carry out the measurement, must interrupt the communication
[0040] Similarly, in the conventional device, there is a problem that, at the time of reception, the wireless device 54, which is required for correcting the amplitude and phase shift of the baseband signal and the AGC signal, cannot be performed in communication with the mobile station device. , The measurement of the characteristic error of 55, in order to carry out this measurement, must interrupt the communication
[0041] In addition, in order to perform the above-mentioned measurement, an oscillation circuit for generating a correction signal whose information symbol is known must be provided at the transmitting end, so there is a problem that the scale of the device increases accordingly and the cost increases accordingly.
Similarly, at the receiving end, an oscillation circuit for generating a correction signal must be provided, so there is a problem that the scale of the device increases accordingly and the cost increases accordingly.

Method used

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  • Communication device and communication method
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  • Communication device and communication method

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0069] image 3 It is a structural block diagram of the transmitting end of the base station apparatus according to Embodiment 1 of the present invention.

[0070] Should image 3 The illustrated base station apparatus 101 is equipped with an array antenna composed of two antennas 102 , 103 , and includes: wireless apparatuses 104 , 105 connected to the antennas 102 , 103 ; and a baseband signal processing apparatus 106 .

[0071] In addition, the baseband signal processing device 106 includes: a baseband signal generating unit 107; phase and amplitude correcting units 108, 109 composed of digital circuits, including D / A conversion circuits not shown in the signal output terminals to the wireless devices 104, 105; and The amplitude and phase comparison units 110 and 111 constituted by digital circuits include an A / D conversion circuit (not shown) on the input side of signals from the wireless devices 104 and 105 .

[0072] Each wireless device 104, 105 includes: quadrature m...

Embodiment 2

[0090] In Embodiment 2, a case where the frequency is up-converted to an intermediate frequency (ID) band once and then up-converted to a radio frequency (RF) band will be described.

[0091] Figure 4 It is a structural block diagram of the transmitting end of the base station apparatus according to Embodiment 2 of the present invention. Among them, in Figure 4 In the shown base station apparatus 201, pair and image 3 Components common to the illustrated base station apparatus 101 are given the same reference numerals, and description thereof will be omitted.

[0092] Figure 4 The base station apparatus 201 shown with image 3 Compared with the illustrated base station apparatus 101, it has a configuration including quadrature modulators 202 and 203 instead of quadrature modulators 112 and 113 . also, Figure 4 The base station apparatus 201 shown with image 3 Compared with the illustrated base station apparatus 101, a configuration is employed in which RF modulato...

Embodiment 3

[0100] In Embodiment 3, a case where the quadrature modulators 302 and 303 are composed of analog elements will be described.

[0101] Figure 5 It is a structural block diagram of the transmitting end of the base station apparatus according to Embodiment 3 of the present invention. Among them in Figure 5 In the shown base station apparatus 301, pair and image 3 Components common to the illustrated base station apparatus 101 are given the same reference numerals, and description thereof will be omitted.

[0102] Figure 5 The base station device 301 shown with image 3 Compared with the illustrated base station apparatus 101, a configuration including quadrature modulators 302 and 303 composed of analog elements instead of quadrature modulators 112 and 113 is employed. also, Figure 5 The base station device 301 shown with image 3 Compared with the illustrated base station apparatus 101 , frequency conversion units 121 and 123 are deleted, and amplitude and phase com...

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PUM

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Abstract

Baseband signal generator 107 outputs a transmission baseband signal with a coefficient for setting antenna directivity multiplied and a gain control signal to transmit power amplifier 114 and transmit power amplifier 114 amplifies the transmission baseband signal with a gain corresponding to the gain control signal and transmits the signal from antenna 102. ATT 118 attenuates the output signal of amplifier 114 according to the gain control signal, amplitude / phase comparator 110 calculates amplitude and phase errors between the attenuated signal with a frequency equalized by frequency conversion sections 120 and 121 and the input signal of amplifier 114 and phase / amplitude correction section 108 corrects the transmission baseband signal and gain control signal so as to eliminate the errors. This makes it possible to correct the amplitude and phase shifts of the transmission signal during a communication with other apparatuses and reduce the size and cost of the apparatus.

Description

technical field [0001] The present invention relates to a communication device such as a base station device in a mobile communication system, and particularly to a communication device equipped with an array antenna. Background technique [0002] As a communication device and a communication method equipped with an array antenna, there is a communication device and a communication method described in JP-A-10-336149. [0003] The array antenna is composed of a plurality of antenna elements, and the directivity of transmission can be freely set by individually adjusting the amplitude and phase of the signal transmitted from each antenna element. [0004] figure 1 It is a block diagram showing the configuration of a transmitting side of a conventional base station device equipped with an array antenna. [0005] Should figure 1 The illustrated base station apparatus 1 is equipped with an array antenna composed of two antennas 2, 3, and includes: wireless apparatuses 4, 5 con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q3/26H03F1/32H04B1/04H04B7/06H04B7/08H04B7/10H04B7/26H04L27/20H04L27/22H04W16/28
CPCH04B2001/0416H01Q3/2605H04B7/0617H04B7/0615H01Q3/26H04B1/0475H01Q3/267F24F11/30F24F11/62F24F11/54F24F11/56H04B1/40
Inventor 高草木惠二
Owner PANASONIC CORP