Ultra-wideband communication system
In an ultra-wideband (“UWB”) communication system, methods are disclosed for transmitting packets in multiple portions, each having a different pulse repetition frequency (“PRF”). Methods are also disclosed for transmitting packets dis-continuously.
1. A method for use in an ultra-wideband communication system for transmitting a packet comprising first and second portions, the method comprising configuring a transmitter facility of the system to perform the steps of:
transmitting the first portion of the packet at a selected first pulse repetition frequency (“PRF”); and
transmitting the second portion of the packet at a selected second PRF different from the first PRF, wherein:
the second portion of the packet is further characterized as comprising a data payload; and
the second PRF is selected to reduce a transmission duration of the data payload.
2. The method of claim 1 , wherein the first portion of the packet comprises at least one of:
a preamble;
a physical header; or
a cipher.
3. The method of claim 1 , wherein the composition of at least the first portion of the packet is pre-defined.
4. The method of claim 3 , wherein:
the first portion of the packet is further characterized as comprising a synchronization sequence of a selected one of a plurality of preamble symbols; and
the first PRF is selected as a function of the selected one of the plurality of preamble symbols.
5. The method of claim 3 , wherein:
the first portion of the packet is further characterized as comprising a synchronization sequence of a selected one of a plurality of preamble symbols; and
a length of the selected one of the plurality of preamble symbols is selected to increase a carrier recovery update rate.
6. The method of claim 1 , wherein:
the second PRF is further selected to increase an energy per bit of the data payload.
7. The method of claim 1 , wherein the second portion of the packet is further characterized as comprising a selected one of a plurality of ciphers.
8. The method of claim 1 , wherein the second portion of the packet further comprises at least one of:
a physical header; or
a cipher.
9. A wireless communication system, comprising:
a transmitter, the transmitter operable to transmit a packet comprising a first portion and a second portion, wherein:
the first portion of the packet is transmitted at a first pulse repetition frequency (“PRF”); and
the second portion of the packet is transmitted at a second PRF that is different from the first PRF, wherein:
the second portion of the packet is further characterized as comprising a data payload; and
the second PRF is selected to reduce a transmission duration of the data payload.
10. A non-transitory computer readable medium including executable instructions which, when executed in a processing system, cause operations to be performed, the operations comprising:
transmitting a first portion of a packet at a first pulse repetition frequency (“PRF”); and
transmitting a second portion of the packet at a second PRF that is different from the first PRF, wherein:
the second portion of the packet is further characterized as comprising a data payload; and
the second PRF is selected to reduce a transmission duration of the data payload.