公开(公告)号：US20070110098A1

公开(公告)日：2007-05-17

申请号：US11538429

申请日：2006-10-03

申请人： Steven Hart ,  Mark Miller ,  Charles Pateros

发明人： Steven Hart ,  Mark Miller ,  Charles Pateros

IPC分类号： H04B7/185

CPC分类号： H04L47/10 ,  H04B7/18543 ,  H04L47/12 ,  H04L47/13 ,  H04L47/25

摘要： A method for managing data traffic in a multi-user multiple-simultaneous-access (MUMSA) environment, for example in a code reuse multiple access (CRMA) environment or other physical environment having true random access with more than one transmission present at the same time, the method including estimating channel load for multiple users, then using the estimate of channel load to calculate a congestion threshold on an ongoing basis, at each terminal performing an experiment using that congestion threshold value and a random number generator to determine if a packet is eligible to be transmitted, transferring downstream virtual channel traffic and redistributing user terminals to affiliate with the proper downstream virtual channel.

摘要翻译： 一种用于管理多用户多同时访问（MUMSA）环境中的数据业务的方法，例如在代码重用多址（CRMA）环境或具有同一存在的多于一个传输的真实随机存取的其他物理环境中的方法 时间，所述方法包括估计多个用户的信道负载，然后使用信道负载的估计来在持续的基础上计算拥塞阈值，在使用该拥塞阈值执行实验的每个终端和随机数发生器来确定分组 传输下游虚拟通道流量并重新分配用户终端以与正确的下游虚拟通道关联。

公开(公告)号：US20070153884A1

公开(公告)日：2007-07-05

申请号：US11549074

申请日：2006-10-12

申请人： Rama Balasubramanian ,  Mark Miller ,  Charles Pateros

发明人： Rama Balasubramanian ,  Mark Miller ,  Charles Pateros

IPC分类号： H04L5/16 ,  H04B15/00

CPC分类号： H04W52/52 ,  H03F1/3247 ,  H03F2201/3233 ,  H04L25/03343 ,  H04L27/368 ,  H04W52/08

摘要： Methods and systems for calculating pre-distortion coefficients in a closed-loop communication system are presented. Transmission terminals that include high power amplifiers are difficult to operate at or near the saturation point without transmitting signals with nonlinear distortions. By pre-distorting the signal prior to amplification the transmitted nonlinear distortions may be decreased. A closed-looped pre-distortion system may include a receiver that calculates the pre-distortion coefficients and transmits these coefficients back to the transmitter. These coefficients may be stored in a pre-distortion coefficient lookup table and may be updated by the receiver terminal.

摘要翻译： 提出了一种用于计算闭环通信系统中预失真系数的方法和系统。 包含高功率放大器的传输终端难以在饱和点处或附近操作，而不会发射具有非线性失真的信号。 通过在放大之前预失真信号，传输的非线性失真可能会降低。 闭环预失真系统可以包括计算预失真系数并将这些系数发送回发射机的接收机。 这些系数可以存储在预失真系数查找表中，并且可以由接收机终端更新。

公开(公告)号：US20060209928A1

公开(公告)日：2006-09-21

申请号：US11431228

申请日：2006-05-09

申请人： Mark Miller ,  Mark Dankberg ,  Charles Pateros

发明人： Mark Miller ,  Mark Dankberg ,  Charles Pateros

IPC分类号： H04B1/69

CPC分类号： H04B1/707 ,  H04B1/7075 ,  H04B7/2628 ,  H04B2201/70703 ,  H04L7/041

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20070127553A1

公开(公告)日：2007-06-07

申请号：US11538431

申请日：2006-10-03

申请人： Mark Miller ,  Mark Dankberg ,  Charles Pateros

发明人： Mark Miller ,  Mark Dankberg ,  Charles Pateros

IPC分类号： H04B1/00

CPC分类号： H04B1/707 ,  H04J11/003 ,  H04J13/0003

摘要： 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.

摘要翻译： 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。