System and method for unified channelization for multi-band OFDM
First Claim
1. A method of communication in a wireless network using ultra-wideband (UWB) spectrum, the wireless network comprising one or more simultaneously operating pico networks, the method comprising:
- dividing the UWB spectrum into a plurality of frequency bands;
forming at least four band groups each including at least three frequency bands, and at least one band group including at least two frequency bands;
assigning at least one band group to each one of the pico networks;
assigning at least one time frequency code to symbols associated with each one of the pico networks, wherein the time frequency code represents one of a single frequency band and a pre-defined sequencing across all the frequency bands within the assigned band group;
communicating data within each one of the pico networks using the assigned band groups according to the time frequency code, wherein each one of the band groups including at least three frequency bands further includes at least seven time frequency codes and the band group including at least two frequency bands further includes at least two time frequency codes.
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Abstract
A system and method for channelization and data multiplexing in ultra-wideband (UWB) wireless communication system is described. The spectrum allocated for UWB in a multi-bank OFDM (orthogonal frequency division multiplex) system is subdivided into various bands. A set of time frequency codes (TFC'"'"'s) is defined, wherein each code specifies one of a plurality of unique band versus time sequences for a particular band group, for sequential data symbols of a given piconet. The combination of FDMA and TFC'"'"'s provides a data complexing system supporting up to 30 simultaneously operating piconets, and a simplified interface between the MAC and PHY.
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Citations
18 Claims
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1. A method of communication in a wireless network using ultra-wideband (UWB) spectrum, the wireless network comprising one or more simultaneously operating pico networks, the method comprising:
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dividing the UWB spectrum into a plurality of frequency bands;
forming at least four band groups each including at least three frequency bands, and at least one band group including at least two frequency bands;
assigning at least one band group to each one of the pico networks;
assigning at least one time frequency code to symbols associated with each one of the pico networks, wherein the time frequency code represents one of a single frequency band and a pre-defined sequencing across all the frequency bands within the assigned band group;
communicating data within each one of the pico networks using the assigned band groups according to the time frequency code, wherein each one of the band groups including at least three frequency bands further includes at least seven time frequency codes and the band group including at least two frequency bands further includes at least two time frequency codes. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for channelization of ultra-wideband (UWB) spectrum in a wireless network using ultra-wideband (UWB) spectrum, the wireless network comprising one or more simultaneously operating pico networks, the system comprising
a frequency-synthesized oscillator configured to generate a signal in steps of 528 MHz beginning at center frequency of 3432 MHz and ending at center frequency of 10,296 MHz; - and
a time frequency code generator coupled to the frequency-synthesized oscillator and configured to assign time-frequency codes to successive data symbols of a pico network such that the successive data symbols are transmitted in corresponding frequency bands of a band group according to assigned time-frequency codes, wherein the UWB spectrum comprises at least four band groups each including at least three frequency bands, and at least one band group including at least two frequency bands, and each one of the band groups including at least three frequency bands further includes at least seven time frequency codes and the band group including at least two frequency bands further includes at least two time frequency codes - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification