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    • 1. 发明申请
    • Method and apparatus for multiple access over a communication channel
    • 通过通信信道进行多次访问的方法和装置
    • US20060209928A1
    • 2006-09-21
    • US11431228
    • 2006-05-09
    • Mark MillerMark DankbergCharles Pateros
    • Mark MillerMark DankbergCharles Pateros
    • H04B1/69
    • H04B1/707H04B1/7075H04B7/2628H04B2201/70703H04L7/041
    • This invention is a multiple access communication technique by which a multitude of transmitters communicate with receivers using direct sequence spread spectrum signaling. The direct sequence codes are reused by a large number of simultaneous transmitters, so the system is named Code Reuse Multiple Access (“CRMA”). This reuse method requires only a small number of codes relative to the number of simultaneous transmitters, and can use as few as one code for all the users. The direct sequence codes are not required to have special properties such as maximal length. The lengths of the spreading codes employed are not necessarily related to the bit or symbol interval. CRMA can be implemented on a Paired Carrier Multiple Access (“PCMA”) system with or without a novel receiver structure which is also described.
    • 本发明是多址发射机通过直接序列扩频信令与接收机进行通信的多址通信技术。 直接序列码由大量的同时发射机重新使用,因此系统被称为码重用多路访问(“CRMA”)。 这种重用方法仅需要相对于同时发送器数量的少量代码,并且可以对所有用户使用少至少一个代码。 直接序列码不需要具有特殊的属性,如最大长度。 所使用的扩展码的长度不一定与位或符号间隔相关。 可以在具有或不具有也被描述的新型接收机结构的配对载波多路访问(“PCMA”)系统上实现CRMA。
    • 2. 发明申请
    • Code Reuse Multiple Access For Satellite Return Link
    • 卫星返回链路的代码重用多路访问
    • US20070127553A1
    • 2007-06-07
    • US11538431
    • 2006-10-03
    • Mark MillerMark DankbergCharles Pateros
    • Mark MillerMark DankbergCharles Pateros
    • H04B1/00
    • H04B1/707H04J11/003H04J13/0003
    • This invention is a multiple access communication technique by which a multitude of transmitters communicate with receivers using direct sequence spread spectrum signaling. The direct sequence codes are reused by a large number of simultaneous transmitters, so the system is named Code Reuse Multiple Access (“CRMA”). This reuse method requires only a small number of codes relative to the number of simultaneous transmitters, and can use as few as one code for all the users. The direct sequence codes are not required to have special properties such as maximal length. The lengths of the spreading codes employed are not necessarily related to the bit or symbol interval. CRMA can be implemented on a Paired Carrier Multiple Access (“PCMA”) system with or without a novel receiver structure which is also described. In an environment having virtual channels, a clock is derived from the received signal in the uplink by sampling the signal to detect symbol edges.
    • 本发明是多址发射机通过直接序列扩频信令与接收机进行通信的多址通信技术。 直接序列码由大量的同时发射机重新使用,因此系统被称为码复用多路访问(“CRMA”)。 这种重用方法仅需要相对于同时发送器数量的少量代码,并且可以对所有用户使用少至少一个代码。 直接序列码不需要具有特殊的属性,如最大长度。 所使用的扩展码的长度不一定与位或符号间隔相关。 可以在具有或不具有也被描述的新型接收机结构的配对载波多路访问(“PCMA”)系统上实现CRMA。 在具有虚拟通道的环境中,通过对信号进行采样来检测符号边缘,从上行链路中的接收信号导出时钟。
    • 3. 发明申请
    • Adaptive Data Rate Control for Narrowcast Networks
    • Narrowcast网络的自适应数据速率控制
    • US20070206525A1
    • 2007-09-06
    • US11744557
    • 2007-05-04
    • Mark MillerMark Dankberg
    • Mark MillerMark Dankberg
    • H04B7/204H04B7/208H04B7/212
    • H04W52/242H04B7/18523H04L1/0005H04L1/0011H04L5/0005H04L5/0016H04L5/22H04W28/0236H04W52/146
    • A system to provide narrowcast communications uses adaptive data rate control to individual subscribers such that the effects of precipitation or other link conditions, which are not common to all subscribers, is mitigated. The invention takes advantage of the fact that the narrowcast data consist of packets which are individually addressed to specific subscribers, or groups of subscribers. The narrowcast data is communicated on a plurality of channels, each of potentially differing data rates. The subscribers are assigned a particular channel, based upon their link quality, to receive packets addressed to them. The lower data rate channel will be less affected by adverse link conditions and are hence assigned to subscribers most likely to incur adverse link conditions.
    • 提供窄幅通信的系统使用对个体用户的自适应数据速率控制,使得减少对所有用户不常见的降水或其他链路状况的影响被减轻。 本发明利用这样一个事实,即窄带数据由单独寻址到特定订户或订户组的分组组成。 窄数据在多个信道上通信,每个信道中的每个信道具有潜在的不同数据速率。 根据用户的链路质量为用户分配一个特定的信道,以便接收到寻址到它们的数据包。 较低的数据速率信道将受到不利的链路条件的影响较小,因此被分配给最可能引起不利链路条件的用户。