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公开(公告)号：US5548805A
公开(公告)日：1996-08-20
申请号：US294489
申请日：1994-08-23
申请人： Isaac Shpantzer , J. Eric Dunn , Yehuda Meiman
发明人： Isaac Shpantzer , J. Eric Dunn , Yehuda Meiman
摘要： A data communication system is provided for use with a cellular system containing an array of cells and a cellular transmitter/receiver located within each cell of the array. Each cellular transmitter/receiver is adapted for transmitting and receiving voice and/or data communication over predetermined channelized frequencies associated with the particular cell in which the cellular transmitter/receiver is located. In accordance with the invention a base data transmission station is located in each cell and is adapted for transmitting a single data stream across a plurality of channels, each of which channels is adapted to carry a single stream of information. Each base data transmitting station does not transmit on the predetermined channels that are assigned to the particular cell in which the base data transmitting station is located (i.e., those channels are "notched"). In one embodiment used channels that are carrying streams of information in adjacent cells are detected and the base data transmission station does not transmit over the frequencies of the used channels (i.e., the used channels are "notched"). In this manner, the single data stream transmitted by the base data transmitting station is transmitted over all of the channels of the cellular array except for the channels that are notched. The base data transmitting station also transmits a notching pattern, which is continuously updated, to mobile transmitters within the cell. The notching pattern comprises information concerning the channels in the cell that are notched and information concerning used channels of adjacent cells that are notched. The mobile transmitters in the cell will transmit a single data stream over all of the plurality of channels of the cellular array except for the notched channels.
摘要翻译： 提供了一种数据通信系统，用于与包含阵列阵列的蜂窝系统和位于阵列的每个小区内的蜂窝发射机/接收机一起使用。 每个蜂窝发射机/接收机适于在与蜂窝发射机/接收机所在的特定小区相关联的预定信道化频率上发送和接收语音和/或数据通信。 根据本发明，基数据传输站位于每个小区中，并且适于在多个信道上发送单个数据流，每个信道中的每个信道适于承载单个信息流。 每个基本数据发送站不在分配给基本数据发送站所在的特定小区（即，这些信道被“切换”）的预定信道上进行发送。 在一个实施例中，使用正在携带相邻小区中的信息流的信道被检测，并且基站数据传输站不会在所使用的信道的频率（即，所使用的信道被“缺口”）上传送。 以这种方式，由基本数据发送站发送的单个数据流在除了缺口的信道之外的蜂窝阵列的所有信道上发送。 基站数据发射站还将连续更新的陷波模式发送到小区内的移动发射机。 陷波模式包括关于小区中被缺口的信道的信息和关于被切割的相邻小区的已使用信道的信息。 小区中的移动发射机将在除了缺口信道之外的蜂窝阵列的所有多个信道的所有通道上传送单个数据流。
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公开(公告)号：US07702031B2
公开(公告)日：2010-04-20
申请号：US11073006
申请日：2005-03-04
申请人： J. Eric Dunn , Mervin L. Grindahl , Keith Barnes
发明人： J. Eric Dunn , Mervin L. Grindahl , Keith Barnes
CPC分类号： H04L27/0012 , H04L1/0025 , H04L27/2613
摘要： A wireless communication system is configured for adaptive modulation of a transmitted symbol. The specific modulation and/or coding is uniquely identified and data related thereto is embedded within the transmitted symbol. A receiver extracts pilot signals form the transmitted symbol and performs a correlation analysis to identify the particular modulation/coding used for that particular transmitted symbol. This permits adaptive modulation on a symbol-by-symbol basis. A base station communicating with a plurality of peripheral subscribers may utilize different modulation/coding for each subscriber depending on channel conditions.
摘要翻译： 无线通信系统被配置用于发送符号的自适应调制。 唯一地识别特定的调制和/或编码，并且与之相关的数据被嵌入在所发送的符号内。 接收机从发送符号中提取导频信号，并进行相关分析，以识别用于该特定发送符号的特定调制/编码。 这允许基于逐个符号的自适应调制。 与多个外围用户通信的基站可以根据信道条件对每个用户使用不同的调制/编码。
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公开(公告)号：US07633893B2
公开(公告)日：2009-12-15
申请号：US11097506
申请日：2005-04-01
IPC分类号： H04B7/14
CPC分类号： H04W84/14 , H01Q1/2291 , H04L5/0007 , H04L27/2601 , H04L27/2657 , H04L27/2662 , H04W8/26 , H04W88/02 , H04W88/021 , H04W88/08
摘要： A fixed wireless access system generally comprises a consumer premise equipment (CPE) unit, that is connected via an Ethernet interface to a personal computer or local area network, and a base station unit that is connected via an Ethernet interface to a network. As such, the CPE unit is preferably easily user-installed while the base station unit is preferably tower-mounted within a 1-5 mile range of the CPE unit. Both the CPE unit and base station unit preferably incorporate an integrated data transceiver/switch that enables a radio frequency air link operating in the 2.5-2.686 GHz range. Orthogonal frequency division multiplexing is used in the uplink and downlink transmissions between CPE units and base station units.
摘要翻译： 固定无线接入系统通常包括经由以太网接口连接到个人计算机或局域网的消费者住宅设备（CPE）单元以及经由以太网接口连接到网络的基站单元。 因此，优选地，在基站单元优选地塔式安装在CPE单元的1-5英里范围内时，CPE单元容易地被用户安装。 CPE单元和基站单元都优选地并入集成的数据收发器/开关，其使能在2.5-2.686GHz范围内工作的射频空中链路。 在CPE单元和基站单元之间的上行链路和下行链路传输中使用正交频分复用。
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公开(公告)号：US07626920B2
公开(公告)日：2009-12-01
申请号：US11097736
申请日：2005-04-01
IPC分类号： H04J11/00
CPC分类号： H04W84/14 , H01Q1/2291 , H04L5/0007 , H04L27/2601 , H04L27/2657 , H04L27/2662 , H04W8/26 , H04W88/02 , H04W88/021 , H04W88/08
摘要： A fixed wireless access system generally comprises a consumer premise equipment (CPE) unit, that is connected via an Ethernet interface to a personal computer or local area network, and a base station unit that is connected via an Ethernet interface to a network. As such, the CPE unit is preferably easily user-installed while the base station unit is preferably tower-mounted within a 1-5 mile range of the CPE unit. Both the CPE unit and base station unit preferably incorporate an integrated data transceiver/switch that enables a radio frequency air link operating in the 2.5-2.686 GHz range. Orthogonal frequency division multiplexing is used in the uplink and downlink transmissions between CPE units and base station units.
摘要翻译： 固定无线接入系统通常包括经由以太网接口连接到个人计算机或局域网的消费者住宅设备（CPE）单元以及经由以太网接口连接到网络的基站单元。 因此，优选地，在基站单元优选地塔式安装在CPE单元的1-5英里范围内时，CPE单元容易地被用户安装。 CPE单元和基站单元都优选地并入集成的数据收发器/开关，其使能在2.5-2.686GHz范围内工作的射频空中链路。 在CPE单元和基站单元之间的上行链路和下行链路传输中使用正交频分复用。
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