Carrier interferometry coding with applications to cellular and local area networks
View Patent ↗An adaptation to Carrier Interferometry synthesis and analysis provides for frequency-varying subcarriers. Coding and decoding functionality can be extended to orthogonal chirped and frequency-hopped waveforms. Poly-amplitude codes permit successive interference cancellation in spatial and frequency-domain processing. Dynamic re-sectorization and bandwidth exchange are facilitated by subcarrier allocation.
1. A carrier interferometry (CI) transmitter, comprising:
a CI coder adapted to encode at least one data sequence onto a CI code to produce at least one data-bearing code vector and to adjust subcarrier weights, and
a modulator adapted to modulate the at least one data-bearing code vector onto a plurality of subcarriers,
wherein at least one of the modulator or the CI coder is adapted to scramble CI codes generated by the CI coder.
2. The CI transmitter recited in claim 1 wherein the modulator includes an invertible transform module.
3. The CI transmitter recited in claim 2 wherein the invertible transform module is adapted to perform at least one of a Fourier transform, a chirp Z transform, or a sliding transform.
4. The CI transmitter recited in claim 1 , wherein the CI coder is adapted to provide for channel coding.
5. The CI transmitter recited in claim 1 , wherein at least one of the modulator and the CI coder is adapted to dynamically allocate subcarriers for at least one communication link.
6. A carrier interferometry (CI) transmitter, comprising:
a CI coder adapted to encode at least one data sequence onto a CI code to produce at least one data-bearing code vector and to adjust subcarrier weights, and
a modulator adapted to modulate the at least one data-bearing code vector onto a plurality of subcarriers,
wherein at least one of the modulator or the CI coder is adapted to provide intentional frequency variations to the subcarriers.
7. A carrier interferometry (CI) transmitter, comprising:
a CI coder adapted to encode at least one data sequence onto a CI code to produce at least one data-bearing code vector and to adjust subcarrier weights, and
a modulator adapted to modulate the at least one data-bearing code vector onto a plurality of subcarriers,
wherein the CI coder is adapted to perform at least one CI coding algorithm configured to non-uniformly spread the at least one data sequence across the plurality of subcarriers.
8. A Carrier Interferometry (CI) receiver, comprising:
a demodulator adapted to demodulate at least one data-bearing CI code vector modulated on a plurality of subcarriers and having at least one data sequence non-uniformly spread across the plurality of subcarriers, and
a CI decoder adapted to decode at least one received data sequence impressed onto the CI code vector and to adjust subcarrier weights.
9. A carrier interferometry (CI) receiver, comprising:
a demodulator adapted to demodulate at least one data-bearing CI code vector modulated on a plurality of subcarriers, and
a CI decoder adapted to decode at least one received data sequence impressed onto the CI code vector and to adjust subcarrier weights,
wherein at least one of the demodulator or the CI decoder is adapted to descramble CI codes.
10. The CI receiver recited in claim 9 , wherein the demodulator includes an invertible transform module.
11. The CI receiver recited in claim 10 , wherein the invertible transform module is adapted to perform at least one of a Fourier transform, a chirp Z transform, or a sliding transform.
12. The CI receiver recited in claim 9 , wherein the CI decoder is adapted to provide for channel decoding.
13. The CI receiver recited in claim 9 , wherein at least one of the CI decoder or the demodulator are adapted to perform successive interference cancellation.
14. A carrier interferometry (CI) receiver, comprising:
a demodulator adapted to demodulate at least one data-bearing CI code vector modulated on a plurality of subcarriers, and
a CI decoder adapted to decode at least one received data sequence impressed onto the CI code vector and to adjust subcarrier weights,
wherein at least one of the demodulator or the CI decoder is adapted to compensate at least one signal based on the data-bearing CI code vector on the plurality of subcarriers for subcarrier frequency variations intentionally imparted to one or more of the subcarriers by a transmitter.