发明名称 |
MELHORIA NOS MÉTODOS DE SINCRONIZAÇÃO PARA REDES DE COMUNICAÇÃO MÓVEIS, POR RÁDIOS, DE MÚLTIPLAS TRANSMISSÕES E FREQUÊNCIA ÚNICA. |
摘要 |
What is described is a circuit arrangement and a method for synchronizing the communication signals between a repeater station (S) of a single-frequency simulcast radio communication network (N) and user terminals (T) with respect to a universal reference signal sent by a central station (M) of the network (N) communicating with the repeater station (S). A frequency offset is determined between a universal frequency reference signal received from the central station (M) and a local frequency reference signal of the repeater station (S), and in the repeater station (S) there are provided a first feedback control loop for supplying a signal for controlling a local oscillator of the repeater station (S) on the basis of the said determined frequency offset, and a second direct control loop for supplying a signal for compensating the residual synchronization difference of the local oscillator (16) to which the transmitter device of the station (S) is tuned. |
申请公布号 |
BRPI0808242(A2) |
申请公布日期 |
2014.10.14 |
申请号 |
BR2008PI08242 |
申请日期 |
2008.03.12 |
申请人 |
SELEX COMMUNICATIONS S.P.A. |
发明人 |
FRANCESCO RESIDORI |
分类号 |
H04L7/00;H04B7/155;H04H20/67 |
主分类号 |
H04L7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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