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2. 发明授权

US06744824B1 Multiple access method, devices for performing this method and communications systems using these methods 失效
标题翻译：多种访问方法，用于执行此方法的设备和使用这些方法的通信系统
公开(公告)号：US06744824B1
公开(公告)日：2004-06-01
申请号：US09704680
申请日：2000-11-03
申请人： Patrick Duvaut , Thierry Jesupret , Marc Marie Ghislain Durvaux
发明人： Patrick Duvaut , Thierry Jesupret , Marc Marie Ghislain Durvaux
IPC分类号： H04K102
CPC分类号： H04L5/02
摘要： A multiple access method for use in a point to multipoint communications network includes a step of allocating a respective unique variable (&rgr;1, . . . , &rgr;i, . . . , &rgr;n) to each respective network terminal of this communications network, a first all-pass filtering operation on at least one oversampled symbol which is derived from upstream information to be transmitted by a terminal (T1;Ti) to a central station (CS) of said communications network, a next step of filtering a received oversampled symbol stream at said central station (CS) for enabling said central station to discriminate therefrom said at least one oversampled symbol that was earlier transmitted by said network terminal (T1;Ti) to said central station (CS), said all-pass filtering operation having a z-transform transfer function ({overscore (c)}i(z)) such that the zeroes thereof correspond to said respective unique variables assigned to all other network terminals, except the unique variable (&rgr;1;&rgr;i) assigned to said network terminal (T1;Ti), whereby said next step of filtering consists of performing the z-transform on said received oversampled symbol stream, and of evaluating said z-transform at the unique variable (&rgr;1;&rgr;i) assigned to said network terminal (T1;Ti). A transmitter and receiver for performing this method are as well disclosed.
摘要翻译：在点对多点通信网络中使用的多址方法包括将相应的唯一变量（rho1，...，rhoi，...，rhon）分配给该通信网络的每个相应网络终端的步骤，第一全部对从由终端（T1; Ti）发送到所述通信网络的中心站（CS）的上游信息导出的至少一个过采样符号进行下列步骤：对接收的过采样符号流进行滤波的下一步骤所述中心站（CS）用于使所述中心站能够将先前由所述网络终端（T1; Ti）发送的所述至少一个过采样符号与所述中央站（CS）进行区分，所述全通滤波操作具有z - 转移传递函数（{overscore（ci（z）），使得其零值对应于分配给所有其他网络终端的所述各个唯一变量，除了分配给sai的唯一变量（rho1; rhoi） d网络终端（T1; Ti），由此所述下一个过滤步骤包括对所接收的过采样符号流执行z变换，以及分配给所述网络终端的唯一变量（rho1; rhoi）来评估所述z变换（T1; Ti）。用于执行该方法的发射机和接收机也被公开。

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