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Reception device and reception method

A receiving device and technology during reception, applied in electrical components, power management, transmission systems, etc., can solve problems such as interference with adjacent cells, achieve the effects of increasing current consumption, preventing saturation and sensitivity deterioration

Inactive Publication Date: 2006-12-27
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the distances between the mobile stations 21, 22, 23 and the base station 17 in the cell 19 are different, if all the mobile stations are transmitted with the same output power, then the farthest mobile station is used as the standard to set the transmission Power, so the unnecessary power is sent to the same frequency channel, which causes the problem of interfering with adjacent cells

Method used

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  • Reception device and reception method
  • Reception device and reception method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0043] Figure 5 It is a block diagram showing the configuration of the receiving device 100 according to Embodiment 1 of the present invention. The receiving device 100 according to Embodiment 1 is a direct conversion receiving device.

[0044] The low-noise amplifier 101 amplifies the received signal, and outputs it to the quadrature demodulator 103 via the capacitor 102 for removing the DC component.

[0045] Quadrature demodulator 103 has mixer 103a and mixer 103b, converts the frequency of the reception signal input from capacitor 102 from radio frequency to baseband, outputs the baseband from mixer 103a to analog baseband circuit 105a, and simultaneously The mixer 103b outputs the baseband to the analog baseband circuit 105b.

[0046] The phase shifter 104 generates two signals having a phase difference of 90 degrees from a local oscillation signal input from a local oscillation source not shown in the figure, and outputs them to the mixer 103a and the mixer of the qua...

Embodiment approach 2

[0088] Figure 12 It is a diagram showing a time slot of a GPRS reception signal received by the reception device according to the second embodiment. The receiving device according to the second embodiment is because the Figure 5 The structure is the same, and its description is omitted.

[0089] according to Figure 12 , the time slot for receiving a signal in GPRS is composed of a header field 801 and a data field 802 .

[0090] Next, regarding the operation of the receiving device, using the Figure 5 and Figure 7 Be explained. In GPRS, in addition to power control using the P0 parameter within the control channel, there is also the possibility of implementing power control using the PR parameter of the header field 801 within the corresponding time slot. According to the GSM specification "Digital cellular telecommunications system (Phase2+), digital cellular telecommunications system (phase 2+); Radio subsystem link control (3GPP TS 05.08 ver 8.16.0 Release 1999),...

Embodiment approach 3

[0095] Figure 13 It is a block diagram showing the configuration of the receiving device 1300 according to Embodiment 3 of the present invention. The receiving device 1300 according to Embodiment 3 is a direct conversion receiving device, and in Figure 5 In the receiving device 100 according to Embodiment 1 shown, as Figure 13 As shown, a comparison unit 1301 is added. In addition, in Figure 13 in, give Figure 5 Parts having the same structure are marked with the same numbers, and their explanations are omitted.

[0096] The electric field intensity measuring unit 108, based on the measurement result of the RSSI input from the data signal processing unit 106, alleviates the influence of fading by a recognized method, and obtains the received signal level of the BCCH which is used as the control standard of the base station transmission power for each time slot. , and outputs the obtained BCCH level information to gain setting section 109 . In addition, when receivin...

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Abstract

There is provided a reception device capable of preventing saturation and sensitivity deterioration of a receiver even when base station transmission power control is performed and capable of performing calibration of an offset voltage without increasing the current consumption amount. In this device, a gain setting unit (109) estimates a reception field intensity of each time slot in the next frame and calculates a gain setting value corresponding to the estimated reception field intensity according to the transmission power information which is information on the reception field intensity and information on the base station transmission power. A gain control circuit (110) extracts the maximum gain from the gains set in the gain setting unit (109) so as to be used as the set gain during DC offset voltage calibration and performs gain control at a gain set value corresponding to each time slot. A voltage calibration circuit (111) performs calibration of the DC offset voltage of the reception signal.

Description

technical field [0001] The present invention relates to a receiving device and a receiving method, and particularly to a receiving device and a receiving method of a system in which the transmission power of a transmission signal differs according to downlink transmission power control. Background technique [0002] In mobile phone services in recent years, as the number of users (mobile stations) increases, the demand for not only voice calls but also data communications is gradually expanding. Therefore, the effective use of resources such as frequency channels and the improvement of communication speed appear Particularly important. For example, in the GSM (Global System For Mobile communications) system popularized mainly in Europe and Asia, a service corresponding to high-speed communication called GPRS (General Packet Radio Service) has started. In GPRS, regarding the link between the mobile station and the base station, instead of assigning a dedicated frequency chan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/16H03G3/30H04B7/005
CPCH03G3/3052H04W52/143H04W52/08H04W52/10
Inventor 清水克人齐藤典昭
Owner PANASONIC CORP
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