Graduate School and Research Center in Digital Sciences

Excess cyclic prefix Window optimization for high doppler MIMO OFDM capacity

Gopala, Kalyana; Slock, Dirk TM

ICASSP 2019, International Conference on Acoustics, Speech, and Signal Processing, 12-17 May 2019, Brighton, UK

In this work, the authors extend their previous work [1] on the design of sum rate maximizing beamformers for a MIMO OFDM scenario under high Doppler. We first justify the linear approximation for the channel variation over an orthogonal frequency division multiplexing (OFDM) symbol. Then, a modified power update for the optimized spatio-frequential precoder is presented. Of great interest is the exploitation of the Excess Cyclic Prefix (ExCP) at the receiver through windowing. We prove that the sum rate metric is a convex function of the window parameters and present a novel majorization based algorithm to design an optimal window. The convergence of the iterative approach is proved and the theory is validated via numerical simulations.

Document Doi Bibtex

Title:Excess cyclic prefix Window optimization for high doppler MIMO OFDM capacity
Type:Conference
Language:English
City:Brighton
Country:UNITED KINGDOM
Date:
Department:Communication systems
Eurecom ref:5818
Copyright: © 2019 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: @inproceedings{EURECOM+5818, doi = {http://dx.doi.org/10.1109/ICASSP.2019.8682932}, year = {2019}, title = {{E}xcess cyclic prefix {W}indow optimization for high doppler {MIMO} {OFDM} capacity}, author = {{G}opala, {K}alyana and {S}lock, {D}irk {TM}}, booktitle = {{ICASSP} 2019, {I}nternational {C}onference on {A}coustics, {S}peech, and {S}ignal {P}rocessing, 12-17 {M}ay 2019, {B}righton, {UK} }, address = {{B}righton, {UNITED} {KINGDOM}}, month = {05}, url = {http://www.eurecom.fr/publication/5818} }
See also: