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Method and device for improving measurement accuracy of signal to noise ratio

A technology for measuring accuracy and signal-to-noise ratio, which can be used in transmission monitoring, electrical components, transmission systems, etc., and can solve problems such as low signal-to-noise ratio measurement accuracy

Active Publication Date: 2013-09-25
ZTE CORP
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Problems solved by technology

[0015] The technical problem to be solved by the present invention is to provide a method and device for improving the measurement accuracy of signal-to-noise ratio, and the problem of low measurement accuracy of signal-to-noise ratio in the case of inaccurate TA measurement or other unfavorable factors in the actual environment

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  • Method and device for improving measurement accuracy of signal to noise ratio
  • Method and device for improving measurement accuracy of signal to noise ratio
  • Method and device for improving measurement accuracy of signal to noise ratio

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Embodiment Construction

[0045] Such as figure 1 As shown, the methods to improve the measurement accuracy of signal-to-noise ratio include:

[0046] For the M code channels corresponding to a resource block, calculate the signal power of N user code channels, the signal power of N pseudo user code channels corresponding to the user code channels, and remove the N user code channels and the N The idle code channel average power of the M-2N idle code channels of a false user code channel;

[0047] When judging that the signal power of the pseudo-user code channel satisfies the power leakage compensation condition, compensate the signal power of the user code channel corresponding to the pseudo-user code channel with the signal power of the pseudo-user code channel;

[0048]Calculate the non-user code channel average power of M-N code channels other than the N user code channels, and calculate the signal-to-noise ratio of each user channel according to the non-user code channel average power;

[0049]...

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Abstract

The invention provides a method and device for improving measurement accuracy of the signal to noise ratio. According to M code channels corresponding to a resource block, the signal power of N user code channels is calculated, the signal power of N dummy user code channels corresponding to the user code channels are calculated, and the average power of M-2N spare code channels, namely the N user code channels and the N dummy user code channels are not included, is calculated. If the signal power of the dummy user code channels is judged to meet a power leakage compensation condition, the signal power of the dummy user code channels is used for compensating the signal power of user code channels corresponding to the dummy user code channels. The average power of M-N non-user code channels, namely the N user code channels are not included, is calculated, and the signal to noise ratio of each user code channel is calculated according to the average power of non-user code channels. According to the method and device for improving measurement accuracy of the signal to noise ratio, under the conditions that TA measurement is not accurate or other adverse factors exist in the actual environment, the measurement accuracy of the signal to noise ratio of the PUCCH format2 series is improved, and power control performance and detection performance of control information are improved.

Description

technical field [0001] The invention relates to the field of wireless communication, a method for improving the measurement accuracy of signal-to-noise ratio in the long-term evolution LTE (Long Term Evolution) physical uplink control channel PUCCH (Physical Uplink Control Channel) format2 series (including format2 / 2a / 2b) and devices. Background technique [0002] Currently, in the LTE system, the PUCCH is a basic LTE uplink physical control channel. Since the PUCCH format2 series has code division characteristics, therefore: 1. Power control has a very important impact on the PUCCH demodulation performance when multiple user equipment UEs (User Equipment) work together. Second, the PUCCH format2 series bears channel quality indicator / precoding matrix indicator / rank indicator CQI / PMI / RI (Channel Quality Indicator / Precoding Matrix Indicator / Rank Indication), system indication acknowledgment information ACK (Acknowledgment) and non-acknowledgment information NACK (Non -Ackno...

Claims

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Application Information

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IPC IPC(8): H04B17/00H04B17/336
Inventor 李瑞霞
Owner ZTE CORP
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