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AssigneeAscom Zelcom AG
InventorsHans Kaufmann, Roland Kueng, Urs Grob, Arnold Welti
Estimating the term…
A base station (BS) and mobile user stations (MS) each with a transmitter (S), a receiver (E) for multipath reception and a control unit (ST) are provided in each cell. Exactly one set of several sequence sets of the auxiliary function used for spectrum spreading is allocated to each cell. Sequences of several sets in pairs have the property that the absolute values of the normalized periodic cross-correlation functions are much smaller than one and for sequences within a set the cross-correlation function in pairs is optimally small around the zero point. Data synchronous generation of the transmission signals takes place in the base station (BS) for all simultaneous connections and the data clock of the received signal is used as data clock of the transmission signal of the user station (MS). Application for digital data transmission in buildings and local areas for the configuration of a so called cordless LAN are considered.
Digital radio transmission system for a network of cells using a phase-coded spread spectrum technique, in which spectrum spreading of a transmitted information carrying signal takes place by multiplication of the information carrying signal with an auxiliary function and despreading of a received information carrying signal takes place by using this auxiliary function, comprising several user stations within a cell, each having a transmitter, a receiver for multipath reception and a control unit and further comprising a base station with a plurality of transmitter-receivers and a base control unit, characterized in that
Dependencies are inferred from the claim text.