Patent ID: 8488660
Filing Date: 2013-07-16
Classification: H04B

Abstract:
1. A signal analysis apparatus of a Long Term Evolution (LTE) system, comprising: a radio frequency reception unit for receiving a radio frequency signal of the LTE system and converting the radio frequency signal into a signal of an intermediate frequency; a digital signal conversion unit for converting an analog signal, processed by the radio frequency reception unit, into a digital signal; a baseband conversion unit for converting the signal of the intermediate frequency into a baseband signal; a baseband signal simple analysis unit to decode the baseband signal in real time in accordance with an LTE standard; a signal depository for storing the baseband signal; a baseband signal precision analysis unit to decode and analyze the baseband signal in accordance with the LTE standard and to analyze various items derived in the decoding process, the baseband signal precision analysis unit comprising a spectrum analysis unit, a time/frequency domain I/Q signal, an analysis unit and an Error Vector Magnitude (EVM), Carrier-to-Interference-plus-Noise Ratio (CINR) information, and I/Q constellation analysis unit; a first switching unit that alternatively connects an output terminal of the baseband conversion unit or the signal depository to a common node, and a second switching unit that alternatively connects an input terminal of the baseband signal simple analysis unit or the baseband signal precision analysis unit to the common node; and a control unit that controls switching of the switching units in response to a simple analysis request or a precise analysis request from a user.