Graduate School and Research Center in Digital Sciences

Minimizing the effect of feedback delay in a multi-user system through adaptive feedback scheduling

Bhamri, Ankit; Hämäläinen, Jyri; Kaltenberger, Florian; Knopp, Raymond

VTC Fall 2013, IEEE 78th Vehicular Technology Conference, 2-5 September 2013, Las Vegas, USA

In this paper, we analyze the downlink performance of a multi-user system consisting of mobile users with wide range of velocity. We categorize these users into different groups on the basis of their velocity range and study the impact of feedback delay on each group for closed-loop transmit beamforming. Based on this analysis, we propose an adaptive feedback-scheduling algorithm to minimize the effect of feedback delay on the performance of the system. We derive generalized performance measuring expressions for the proposed algorithm and carry out simulations to validate the analysis.

Document Doi Bibtex

Title:Minimizing the effect of feedback delay in a multi-user system through adaptive feedback scheduling
Keywords:Closed-loop transmit beamforming, Feedback Delay, High-velocity User, Pedestrian User, Scheduler, Urban User
Type:Conference
Language:English
City:Las Vegas
Country:UNITED STATES
Date:
Department:Communication systems
Eurecom ref:4084
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Bibtex: @inproceedings{EURECOM+4084, doi = {http://dx.doi.org/10.1109/VTCFall.2013.6692284 }, year = {2013}, title = {{M}inimizing the effect of feedback delay in a multi-user system through adaptive feedback scheduling}, author = {{B}hamri, {A}nkit and {H}{\"a}m{\"a}l{\"a}inen, {J}yri and {K}altenberger, {F}lorian and {K}nopp, {R}aymond }, booktitle = {{VTC} {F}all 2013, {IEEE} 78th {V}ehicular {T}echnology {C}onference, 2-5 {S}eptember 2013, {L}as {V}egas, {USA}}, address = {{L}as {V}egas, {UNITED} {STATES}}, month = {09}, url = {http://www.eurecom.fr/publication/4084} }
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