Graduate School and Research Center in Digital Sciences

Optimal precoders for tracking the AoD and AoA of a mmWave path

Garcia, Nil; Wymeersch, Henk; Slock, Dirk

IEEE Transactions on Signal Processing, 17 September 2018

In millimeter-wave channels, most of the received energy is carried by a few paths. Traditional precoders sweep the angle-of-departure (AoD) and angle-of-arrival (AoA) space with directional precoders to identify directions with largest power. Such precoders are heuristic and lead to sub-optimal AoD/AoA estimation.We derive optimal precoders, minimizing the Cramér-Rao bound (CRB) of the AoD/AoA under a given uncertainty range, assuming a fully digital architecture at the transmitter and spatial filtering of a single path. The precoders are found by solving a suitable convex optimization problem. We demonstrate that the accuracy can be improved by at least a factor of two over traditional precoders, and show that there is an optimal number of distinct precoders beyond which the CRB does not improve.  

Document Doi Bibtex

Title:Optimal precoders for tracking the AoD and AoA of a mmWave path
Type:Journal
Language:English
City:
Date:
Department:Communication systems
Eurecom ref:5687
Copyright: © 2018 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Bibtex: @article{EURECOM+5687, doi = {http://dx.doi.org/10.1109/TSP.2018.2870368}, year = {2018}, month = {09}, title = {{O}ptimal precoders for tracking the {A}o{D} and {A}o{A} of a mm{W}ave path}, author = {{G}arcia, {N}il and {W}ymeersch, {H}enk and {S}lock, {D}irk}, journal = {{IEEE} {T}ransactions on {S}ignal {P}rocessing, 17 {S}eptember 2018}, url = {http://www.eurecom.fr/publication/5687} }
See also: