A signal processing method and device

Abstract

The invention discloses a signal processing method. The method comprises the following steps: a BBU performing bit-slicing processing on a to-be-processed signal after acquiring the to-be-processed signal after gain processing from a RRU, and performing saturation processing on the to-be-processed signal after performing the bit-slicing processing, thereby avoiding quantization error of a signal caused by transmission between boards, meeting the requirement of a system index while reducing data bit width transmitted between the boards, and guaranteeing that the bit-slicing error cannot increase the influence of the quantization error to the sensitivity of a receiver. And meanwhile, the method further comprises the step of adjusting linkage gain according to average power of a signal acquired by an ADC so as to prevent signal from oversaturating in the premise of guaranteeing the precision of the sensitivity of the receiver.

Description

Technical field

[0001] The present invention relates to the field of communication technology, and in particular to a signal processing method. The invention also designs a signal processing device. Background technique

[0002] LTE-TDD (Long Term Evolution-Time Division Duplexing, Long Term Evolution-Time Division Duplexing) receiver sensitivity measurement is an important indicator of the receiver, and sometimes it can be through SNRrx (system demodulation normalized signal-to-noise ratio requirement) or The NF (Noise Figure, noise figure) test replaces the sensitivity test. On the one hand, it simplifies the test process, and on the other hand, it avoids the external influence on the test when testing the sensitivity.

[0003] Such as figure 1 As shown, it is a schematic diagram of the sensitivity detection of the intermediary mobile phone in the prior art. In theory, the algorithm simulation can be completed by the following two aspects:

[0004] 1) Test the link gain first, an...

Examples

Embodiment Construction

[0050] In order to ensure that the maximum carrier data can be effectively transmitted in the uplink, the present invention proposes a signal processing method, which reduces the data bit width transmitted between boards on the premise of meeting the requirements of the system indicators, and ensures that the data is truncated in the process Will not cause the problem of increasing the quantization error.

[0051] Such as image 3 As shown, the method includes the following steps:

[0052] S301: The baseband processing unit BBU obtains a signal to be processed after gain processing from the remote radio unit RRU.

[0053] After the DDC filtering and extraction, since the suppression of the filter of the last stage of the DDC reaches more than 70dBc, the high blocking signal outside the band is filtered out. At this time, the gain of 12dBc is increased in the post stage of DDC, and the increased gain is the signal in the band. Therefore, in a preferred embodiment of the present inve...

Technical field

[0001] The present invention relates to the field of communication technology, and in particular to a signal processing method. The invention also designs a signal processing device. Background technique

[0002] LTE-TDD (Long Term Evolution-Time Division Duplexing, Long Term Evolution-Time Division Duplexing) receiver sensitivity measurement is an important indicator of the receiver, and sometimes it can be through SNRrx (system demodulation normalized signal-to-noise ratio requirement) or The NF (Noise Figure, noise figure) test replaces the sensitivity test. On the one hand, it simplifies the test process, and on the other hand, it avoids the external influence on the test when testing the sensitivity.

[0003] Such as figure 1 As shown, it is a schematic diagram of the sensitivity detection of the intermediary mobile phone in the prior art. In theory, the algorithm simulation can be completed by the following two aspects:

[0004] 1) Test the link gain first, an...

Examples

Embodiment Construction

[0050] In order to ensure that the maximum carrier data can be effectively transmitted in the uplink, the present invention proposes a signal processing method, which reduces the data bit width transmitted between boards on the premise of meeting the requirements of the system indicators, and ensures that the data is truncated in the process Will not cause the problem of increasing the quantization error.

[0051] Such as image 3 As shown, the method includes the following steps:

[0052] S301: The baseband processing unit BBU obtains a signal to be processed after gain processing from the remote radio unit RRU.

[0053] After the DDC filtering and extraction, since the suppression of the filter of the last stage of the DDC reaches more than 70dBc, the high blocking signal outside the band is filtered out. At this time, the gain of 12dBc is increased in the post stage of DDC, and the increased gain is the signal in the band. Therefore, in a preferred embodiment of the present inve...

Images