Interference cancelling block modulation

摘要

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.

主权项

1. A method for enabling communications in a communication network, said method comprising of:
coding an input stream with a precoder matrix by a transmitter, wherein said transmitter has been assigned said precoder matrix and wherein said transmitter rearranges said coded input stream before transmission; transmitting said coded input stream to a receiver by said transmitter; and detecting said coded input stream using precoder matrices of all transmitters present in said network by said receiver, wherein said receiver determines said precoder matrices of all other said transmitters using said precoder matrix of said transmitter.