公开(公告)号：US20040022307A1

公开(公告)日：2004-02-05

申请号：US10208045

申请日：2002-07-31

Applicant: Broadcom Corporation

Inventor： Mark Dale ,  Dorothy Lin ,  Jen-chieh Chien ,  Alan Gin ,  Rocco J. Brescia JR. ,  Alan Kwentus ,  David L. Hartman ,  Joyce Wang

IPC: H04N007/20 ,  H04N007/173 ,  H04B001/38 ,  H04L005/16

CPC classification number: H04L1/0057 ,  H04L1/004 ,  H04L1/0065 ,  H04L1/0066 ,  H04L25/03343 ,  H04L27/34 ,  H04L2025/0342

Abstract: Methods and systems for modifying DOCSIS-based transmission paths for communication in higher frequency and/or wireless environments, such as wireless terrestrial communication systems and satellite communication systems. An inner turbo-code is combined with a DOCSIS based Reed-Solomon (nullRSnull) forward error correction (nullFECnull) coding scheme, to produce a concatenated turbo-RS code (other FEC codes can be utilized). In phase and quadrature phase (nullI-Qnull) processing is utilized to enable relatively low cost up-converter implementations. The I-Q processing is preferably performed at baseband, essentially pre-compensating for analog variations in the transmit path. Power amplifier on/off control capable of controlling on/off RF power control of remote transmitters is modulated on a transmit cable to reduce the need for a separate cable.

Abstract translation: 用于修改在诸如无线地面通信系统和卫星通信系统的较高频率和/或无线环境中进行通信的基于DOCSIS的传输路径的方法和系统。 内部turbo码与基于DOCSIS的Reed-Solomon（“RS”）前向纠错（“FEC”）编码方案组合，以产生级联的turbo-RS码（可以利用其他FEC码）。 使用同相和正交相位（“I-Q”）处理来实现相对低成本的上变频器实现。 优选地，在基带处执行I-Q处理，基本上对发送路径中的模拟变化进行预补偿。 功率放大器开/关控制能够控制远程发射机的开/关射频功率控制在发射电缆上进行调制，以减少对单独电缆的需要。