Receiving level strength indication computing method and apparatus

Abstract

The present invention provides a receiving level intensity indication computing method, comprising the following steps: performing dynamic shift process on input IQ data, shifting for M1; intercepting the input IQ data after shifting from the receiving signals, computing discrepant digit M2 of the energy sum E0 and the reference level energy with the same digit, obtaining the energy sum E0' through shifting the energy sum E0 for M2; respectively comparing the energy sum E0' with the reference level, computing the final reference level; computing the dynamic adjusting level value of M1 and M2; computing the final reference level value and the dynamic adjusting level value to receive the signal level value. Meanwhile, disclosed is a receiving level intensity indication computing device, comprising a dynamic shifting process unit, an energy shifting process unit, a final reference level computing unit, a dynamic adjustment level computing unit and a receiving signal level computing unit. The receiving level intensity indication computing method provided by the present invention improves computing accuracy for the system to receive the level intensity indication, with simple operation and strong practicability.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method and device for calculating a receiving level strength indication in a wireless communication system. Background technique [0002] In the field of wireless communication, the base station needs to dynamically adjust the transmit power of the base station on the channel occupied by the mobile station and the transmit power of the mobile station according to the received level strength indication of the mobile station. In addition, when the base station adopts multi-diversity reception, judging whether each diversity signal is valid or not depends on the received level strength indication of the mobile station to select, so this requires the base station receiver to have a more accurate reception level strength indication, that is, RSSI Calculate ability. [0003] In the actual wireless communication system, the implementation of baseband processing generally uses a fi...

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Problems solved by technology

Among them, the energy level corresponding table is measured by the instrument, and has traversed each level point. The advantage of this method is that the calculation method is simple, and the I, Q modulus and addition will not overflow, which is convenient for the realization of the fixed-point processor in the system. Since the energy is measured by the sum of I and Q moduli, the stability and accuracy of energy calculation are poor, and there is a small level reference with unstable energy in the energy level correspondence table, so the RSSI calculation accuracy of this method is low The disadvantages are also obvious

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