US 8,787,470 B2 · Data encoding

Abstract

The receiver portion of a UWB wireless device is altered by replacing analog-to-digital circuitry with a simple energy detection circuit. In embodiments, the coding methodology of a transmitter is altered to support the simplified receiver configuration. For example, instead of coding the data to be sent in the phase of the UWB signal, the data is encoded in a binary fashion in discrete frequency subbands of the UWB signal. Although this may reduce the usable bandwidth of the channel, it also decreases the complexity and power consumption of UWB devices. In one or more embodiments, a UWB device is able to select a transmission mode (BPSK or Energy Coding) based on its environment. Moreover, in one or more embodiments, receiving devices may switch between coding modes based on the capabilities of a remote transmitter and/or a peer receiver.

Claims20

Dependent claims

One or more hardware computer-readable storage media storing instructions that are executable by a device to cause the device to encode a data value for transmission by performing operations comprising:

assigning each of different binary values to a different frequency subband of a plurality of frequency subbands in a frequency bandwidth;
and
applying energy at one particular point in time to two or more of the frequency subbands to generate a plurality of the different binary values having a sum that corresponds to the data value, the data value being selected from a number of possible data values that is greater than a number of the frequency subbands in the frequency bandwidth.

Dependencies are inferred from the claim text.

Data encoding

Life of this patent

Data encoding

Life of this patent

Abstract

Claims20