Receiver for a CDMA system
AssigneeCommissariat a l'Energie Atomique
InventorsLaurent Ouvry, Didier Lattard, Jean-Rene Lequepeys
Life of this patent
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Abstract
The receiver includes at least one channel (V1) with an adapted filter (20) and with a symbol clock signal (Hs) recovery circuit (12) and other channels (V2, . . . , Vk) with a sliding correlator (302, . . . , 30k) using the symbol clock signal (Hs) produced by the channel (V1) with adapted filter. Application for radiocommunications with mobiles.
Claims1
A receiver for a CDMA system, intended to receive signals corresponding to spread spectrum information symbol streams in pseudorandom binary sequences, this receiver including K processing channels (V1, V2, . . . , Vk) being characterised in that at least one of these channels (V1) includes a filter (20) adapted to one of the pseudorandom sequences having been used for information symbols spectrum spreading and a symbol clock signal (Hs) recovery circuit (12), the other channels (V2, . . . , Vk) each including a sliding correlator (302, . . . , 30k) working with one of the other sequences having been used for information symbols spectrum spreading, each sliding correlator being controlled by a symbol clock signal, which is the clock signal (Hs) produced by the channel (V1) using the adapted filter (20).
Dependencies are inferred from the claim text.