UPSTREAM COMMUNICATION SYSTEM WITH CONTROLLABLE BAND PASS FILTER PROPERTIES,申请号IB2002002322-传众专利搜索

UPSTREAM COMMUNICATION SYSTEM WITH CONTROLLABLE BAND PASS FILTER PROPERTIES

申请公布号：WO2003001710(A2)

申请号：IB2002002322

申请日期：2002.06.18

申请公布日期：2003.01.03

摘要：<p>A communication system (1) is described in a possible embodiment comprising a main transmitter (TR) having two or more series arrangements of at least a digital signal processor (6) and a down sampler (7) coupled to the band pass filter (6), and having a multiplexer (MUX) coupled to each of the series arrangements and to a communication channel (CHUS, CHDS), and a main receiver (RC) having two ore more further series arrangements of at least an up sampler (9) and a further digital signal processor (10) coupled to the up sampler (9), and having a demultiplexer (DEMUX) coupled to the communication channel (CHUS, CHDS) and to each of the further series arrangements. Such a system is used for upstream transmission in a Hybrid Fiber Coax (HFC) network within specified frequency bands. The described system (1) provides extended flexibility to allow error reduced upstream transmission at an increased data rate. Control means (8, 11) provide adjustment of the digital signal processor parameters after installation of the system (1).</p>