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US 2011/0255453 A1Published application
System and method for scrambling and time-hopping
AssigneeTexas Instruments Incorporated
InventorsJune Chul ROH, Anuj BATRA, Srinath HOSUR
Life of this patent
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Abstract
A system and method for scrambling and time-hopping in an ultra-wideband wireless network. In one embodiment, a wireless device includes a symbol mapper and a dynamic chip scrambler. The dynamic chip scrambler is configured to scramble each of a plurality of consecutive bursts of a time-hopped packet according to a pseudo-random scrambling sequence that varies from burst to burst.
Claims24
A wireless device, comprising:
- a symbol mapper, and
- a dynamic chip scrambler;
- wherein the dynamic chip scrambler is configured to scramble each chip of a plurality of consecutive bursts of a time-hopped packet according to a pseudo-random scrambling sequence that varies from burst to burst.
A wireless device, comprising:
- a symbol mapper, and
- a dynamic chip scrambler;
- wherein the symbol mapper is configured to map a given symbol to one of a plurality of available time slots of a symbol frame, the selection of a time slot based on a time slot of a previous symbol, and a predetermined minimum number of time slots that separate the time slot from the time slot of the previous symbol.
A method, comprising:
- receiving, by a wireless device, a packet;
- initializing, by the wireless device, a pseudo-random value generator with a value extracted from a header of the packet;
- generating, by the wireless device, a time-hopping sequence used to vary time slots associated with symbols of the packet;
- and
- generating by the wireless device, a scrambling sequence used to scramble the chips of each burst of the packet;
- wherein the time-hopping sequence and the scrambling sequence are based on an output of the pseudo-random value generator.
3 more elements
Dependencies are inferred from the claim text.