Abstract: The present disclosure provides a method and an apparatus for demodulating a downlink channel in a communication system, and a baseband chip. The demodulation method may include: obtaining RE data corresponding to the downlink channel successively from an OFDM symbol; demodulating the RE data to obtain demodulated data; filling the demodulated data to a corresponding position in a downlink channel buffer; and proceeding to obtain RE data corresponding to the downlink channel successively from a next OFDM symbol if a sequence number of the OFDM symbol does not reach a predetermined number. The present disclosure saves buffer space of the baseband chip in a UE.

Abstract: The embodiments of the disclosure disclose a method and an apparatus for acquiring estimated values of transmitted signals, and a system-on-chip. The method comprises: in response to the sequence number N of a current OFDM symbol between sequence numbers N1 and N2 that are sequence numbers of two adjacent OFDM symbols containing pilots, for each RE within the Nth OFDM symbol, instantaneously acquiring a channel estimation value CNi of the RE by a linear interpolation method; extracting an FFT value of the ith RE from an FFT buffer unit, and based on a preset MIMO demodulation algorithm, performing computation on the CNi and the FFT value of the ith RE, thereby obtaining an estimated value of transmitted signals fro on the ith RE within the Nth OFDM symbol. The embodiments of the disclosure can save SOC memory, reduce SOC chip cost, and enhance SOC information processing performance.

Abstract: The present disclosure discloses a method and an apparatus for measuring response curve of an image sensor. The method comprises: taking at least one photograph of a Grey Scale card with an image sensor to be measured, wherein the photograph comprises a plurality of greyscale image blocks; calculating relative exposure values for each greyscale image block respectively corresponding to the greyscale blocks of the Grey Scale card; plotting a plurality of reference points based on pixel values of pixel points within each greyscale image block and the relative exposure values, and executing an interpolation calculation based on the reference points to obtain a response curve of the image sensor.