利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

1 条记录 (耗时 0.011 秒)

    Use of trellis coded modulation to mitigate fading channels in data transmission over air link wireless channels of GPRS/EDGE systems
    1.
    发明申请
    Use of trellis coded modulation to mitigate fading channels in data transmission over air link wireless channels of GPRS/EDGE systems 审中-公开
    使用网格编码调制来减轻GPRS / EDGE系统的空中链路无线信道数据传输中的衰落信道

    公开(公告)号：US20020108089A1

    公开(公告)日：2002-08-08

    申请号：US09738755

    申请日：2000-12-15

    申请人： Nortel Networks Limited

    发明人： Anthony Reid ,  Faruk Hadziomerovic

    IPC分类号： H03M013/03

    CPC分类号： H04L1/006 ,  H03M13/256 ,  H03M13/6536 ,  H04L27/186

    摘要： Disclosed is a system and method for improving efficiency and overall capacity of data transmission within a given bandwidth in a GPRS/EDGE wireless air-link channel. A GPRS data terminal, mobile unit and/or other end-user equipment is equipped with a (specially designed) Trellis coder that replaces the traditional cyclic coder and allows encoding and decoding of data via the Trellis code algorithm. Trellis coder eliminates errors in data transmission, increases capacity in a given bandwidth, and corrects problems with fading channels associated with wireless transmission. The Trellis coder is also utilized for voice transmission and may be fabricated on an integrated circuit for utilization within hand-held devices.

    摘要翻译： 公开了一种用于提高在GPRS / EDGE无线空中链路信道中的给定带宽内的数据传输的效率和总体容量的系统和方法。 GPRS数据终端，移动单元和/或其他最终用户设备配备有（特别设计的）网格编码器，其替代传统的循环编码器，并允许经由网格码算法对数据进行编码和解码。 网格编码器消除数据传输中的错误，增加给定带宽中的容量，并纠正与无线传输相关的衰落信道的问题。 网格编码器还用于语音传输，并且可以在集成电路上制造以用于手持式设备中。