Implementation of CMA-base blind equalizer on FPGA

In PCM/FM remote sensing receiving system, when the bit rate is above 1Mbps, the signal suffers frequency select fading, which causes the serious inter-symbol interference (ISI); power allowance can no longer guarantee the system quota. Besides signal reflection such as buildings, ground, mountains and atmospheric refraction eventually become the multipath interference signals. Thus an adaptive filter is needed for equalization before the sample-decision detector in the receiver [1]. The traditional method is based on training sequence channel equalization. However, considering to these two problems, two issues are discussed in this dissertation: blind equalization based on the adaptive filter theory; the realization of blind equalizer on FPGA.