Blind equalizer, decision directed to radial, with variable step adaptive

摘要

Blind equalizer, decision directed to radial, with step adjustment variable.A new blind equalizer, decision directed to radial, with step variable adaptation, known as VSS - RDE (variable step - size radius directed equalization (EQ) directed to the radial adjustment decision with step variable), which applies to telecommunications systems With high transmission rate, especially applies to digital receivers with blind equalization.Signal processing MQAM (QAM (quadrature amplitude modulation (quadrature amplitude modulation), which employ coherent detection of transmitted signal at the receiver and digital signal processing (DSP) in the receiver, using a new technique of adjusting step of Ta Ualizau00e7u00e3o algorithm decision equalization directed to the radial RDE (radius directed equalization)It consists of an unsupervised equalization of signals with quadrature amplitude modulation QAM (quadrature amplitude modulation).Where this technique applies to digital communication systems with modulation MQAM, with cardinality equal to or greater than 16, as 16QAM, 32qam, 64QAM, or higher, with the aim to modify the algorithm so as to improve performance of RDE, minimizing the impact of the limitations of the state The current technique, using steps of adjustment variables.Dependent on the radius determined for the calculation of the cost function, with the advantage of improving the performance of the adaptive equalizer, which is reflected in lower bit error rate, the end of the chain of blocks of digital signal processing in the receiver, and reduce the time of convergence of algori TMO in the processing of the received signal.