Patent · US Active

Interference cancelling block modulation

US9338038B2 · kind B2 · utility

1Cited by

1References

15Claims

0Family size

Inventors

Krishnamurthy Giridhar · Viralimalai, IN
Vinoth Nagarajan · Kanchinakote, IN
Ayyar Arun Balavenkatasubramanian · Salem, IN
Bhaskar Ramamurthi · Chennai, IN
Devar Sendilramkumar S · Ahmedabad, IN
Ganesh V. · Chennai, IN
Kuchi Kiran Kumar · Chennai, IN

Key dates

Filing date	Apr 11, 2011
Grant date	May 10, 2016
Priority date	—
Expiry date	Apr 11, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2025/03426
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Embodiments herein disclose an Interference Cancelling Block Modulation (ICBM), a new open-loop precoding scheme where each transmitter is assigned with a predetermined precoder which facilitates interference cancellation at the receivers. Only a finite set of precoders will be used, and they will be assigned to each transmitter in a pre-determined manner. Usually, interfering transmitters located adjacent to each other will have different precoders, and the same precoder can be reused by non-adjacent transmitters. The precoders are represented by N×K matrices and they expand the symbols in time and/or frequency by a factor of N/K while providing precoded sequences with low cross-correlation properties.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.