The implementation of the compressive sensing was studied in this paper.Because of the transmission delay and the pass band ripple,the measurement matrix in a real compressive sensing receiver was different from that in theory. These differences caused the reconstruction error when digital modulated signals were compressively sensed.A self-loop measuring method of the circuit dictionary basis and an algorithm of time-delay compensation were proposed to solve this problem.The frequency range and the effectiveness of our compressive sensing receiver were verified through experiments. The SNR(Signal Noise Ratio)loss of the compressive sensing was also evaluated through the QPSK(Quadrature Phase Shift keying)demodulation test.%研究压缩感知用于信号采样的工程化问题，给出了MWC（Modulated Wideband Converter）结构压缩感知宽带接收机的具体设计方案，提出了字典基自环测量获取方法和字典基的时延估计补偿算法，有效解决了工程化中因观测电路存在传输时延、通带波纹等与理论观测矩阵不一致，导致压缩感知处理数字调制信号时存在重构畸变的问题。实验测量了接收机的频率覆盖范围，验证了压缩感知的有效性，并以QPSK（Quadrature Phase Shift keying）信号解调误码率为标准量化评估了压缩采样造成的信号质量损失。
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