P. K. Shah, K. Joshi, S. Joshi, A. Tolli and K. Umebayashi, "Direct Beamformer Estimation for Hybrid Architecture in mmWave Dynamic TDD System," 2020 IEEE Wireless Communications and Networking Conference Workshops (WCNCW), Seoul, Korea (South), 2020, pp. 1-6, doi: 10.1109/WCNCW48565.2020.9124904
Direct beamformer estimation for hybrid architecture in mmWave dynamic TDD system
|Author:||Shah, Prashant Kumar1; Joshi, Krishna1; Joshi, Satya1;|
1Centre for Wireless Communications, University of Oulu, P.O. Box 4500, 90014, Finland
2Dept. of Electrical and Electronic Engineering, Tokyo University of Agriculture and Technology, Japan
|Online Access:||PDF Full Text (PDF, 0.2 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2020101684225
Institute of Electrical and Electronics Engineers,
|Publish Date:|| 2020-10-16
The problem of weighted sum-rate maximization for hybrid architecture in millimeter wave communications with dynamic time division duplexing is considered. We propose an over the air pilot- aided direct beamforming estimation technique for the considered problem, by exploiting the channel reciprocity. Proper selection of analog precoder/combiner not only suppresses large part of interference, but also ensures that less coordination is required for digital precoder/combiner design. We design analog precoder/combiner for each data stream in such a way that its signal strength is maximized; this strategy also minimizes large part of inter-stream interference that may arise due to the main lobe of analog beamformer. Then we design digital beamformer such that inter-stream interference is further mitigated, maximizing the overall weighted sum-rate of the network.
|Pages:||1 - 6|
2020 IEEE Wireless Communications and Networking Conference Workshops, WCNCW 2020
IEEE Wireless Communications and Networking Conference Workshops
|Type of Publication:||
A4 Article in conference proceedings
|Field of Science:||
213 Electronic, automation and communications engineering, electronics
This work was supported by the European Commission in the framework of the H2020-EUJ-02-2018 project 5G-Enhance (Grant agreement no. 815056), the Academy of Finland 6Genesis Flagship (grant no. 318927), and the Ministry of Internal Affairs and Communications (MIC) of Japan.
|Academy of Finland Grant Number:||
318927 (Academy of Finland Funding decision)
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