Robust beamforming for two-user MISO broadcasting channel with delayed CSIT

Yi Luo, Huiqin Du, T. Ratnarajah

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Recently proposed MAT1 scheme achieves high degrees of freedom (DoF) by exploiting delayed channel state information at transmitter side (CSIT) and the concept of interference alignment (IA), where the interference vectors of different time slots are aligned. As the starting work, MAT scheme considers no flexibility when reconstructing symbols at the third time slot, which may lead to performance degradation once the channel varies. In this paper, a probabilistic optimization problem is proposed with the assumption that the unknown channel entries follow given distribution. Instead of maximizing the sum rate directly, we strive to maximize the signal power while keeping the high probability that the interference power is lower than a pre-specified threshold. The Monte Carlo simulation results show that the proposed scheme outperforms the MAT scheme and dual SINR scheme with various channel uncertainties.

Original languageEnglish
Title of host publicationProceedings of the IEEE Sensor Array and Multichannel Signal Processing Workshop
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages161-164
Number of pages4
ISBN (Print)9781479914814
DOIs
Publication statusPublished - 1 Jan 2014
Event2014 IEEE 8th Sensor Array and Multichannel Signal Processing Workshop, SAM 2014 - A Coruna, United Kingdom
Duration: 22 Jun 201425 Jun 2014

Conference

Conference2014 IEEE 8th Sensor Array and Multichannel Signal Processing Workshop, SAM 2014
CountryUnited Kingdom
CityA Coruna
Period22/06/1425/06/14

Fingerprint Dive into the research topics of 'Robust beamforming for two-user MISO broadcasting channel with delayed CSIT'. Together they form a unique fingerprint.

Cite this