Channel Hopping for Increased Capacity on Combined Cellular Voice and Packet Radio Networks

用于增加蜂窝语音和分组无线网络组合容量的信道跳跃

• 批准号: 9461685
• 负责人: Jay Jacobsmeyer
• 金额: $ 7.47万
• 依托单位: Pericle Communications Company
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-02-01 至 1996-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9461685&HistoricalAwards=false
• 关键词: Channel; Hopping; Increased; Capacity; Combined

This Small Business Innovation Research Phase I project investigates the performance and feasibility of a channel-hopping packet radio-base station. In the United States, a consortium of cellular service providers is building a nationwide mobile data network called Cellular Digital Packet Data (CDPD). By using existing 30 kHz radio frequency channels, CDPD provides a mobile data overlay on the existing cellular voice system. To exploit unused capacity, CDPD hops between idle voice channels. Base stations currently under development scan the available frequencies and select the idle channel that is expected to remain idle for the maximum length of time. This approach is far from optimal because it does not address co-channel interference effects. To improve throughput of hopping data channels, the base station should select the idle channel with the least co-channel interference. By doing so, a packet radio system can theoretically increase throughput by a factor of five. This project presents many technical challenges, including the need for a 12.5 MHz-wide digital receiver capable of acquiring and processing channel data in less than 10 milliseconds. The research objectives of this project are to demonstrate a factor of four improvement in throughput in Rayleigh fading, determine estimation accuracy, determine the impact of implementation losses, determine the performance of multiple hopping channels, and investigate efficient spectral estimation techniques.

这个小企业创新研究第一阶段项目调查的性能和信道跳频分组无线电基站的可行性。在美国，一个蜂窝服务提供商联盟正在建立一个全国性的移动的数据网络，称为蜂窝数字分组数据（CDPD）。通过使用现有的30 kHz无线电频率信道，CDPD在现有的蜂窝话音系统上提供移动的数据覆盖。为了利用未使用的容量，CDPD在空闲的语音信道之间跳跃。目前正在开发的基站扫描可用的频率，并选择期望在最大时间长度内保持空闲的空闲信道。这种方法远不是最佳的，因为它没有解决同信道干扰效应。为了提高跳频数据信道的吞吐量，基站应该选择具有最小同信道干扰的空闲信道。通过这样做，分组无线电系统理论上可以将吞吐量增加五倍。该项目提出了许多技术挑战，包括需要一个12.5 MHz宽的数字接收机，能够在不到10毫秒的时间内获取和处理信道数据。该项目的研究目标是证明Rayleigh衰落中吞吐量的四倍改进，确定估计准确度，确定实施损耗的影响，确定多跳频信道的性能，并研究高效的频谱估计技术。