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Samenvatting
In lineofsight massive MIMO, there is a nonnegligible probability that two users become highly correlated, which leads to a reduction in the achievable sumrates of linear precoders. In this letter, threshold values of a previously proposed dropping algorithm are found analytically to avoid repeating a large number of simulations to find the optimal threshold. These thresholds allow us to improve conjugate beamforming (CB) and zeroforcing (ZF) sumrates with maxmin power control. By using the proposed threshold values, the CB and ZF sumrates are maximized, when there are only two correlated users. In addition, by using the derived thresholds, a modified dropping algorithm is proposed for channels with any number of correlated users. The results of the simulation scenarios show that at signal to noise ratio of 20 dB and 120 antennas at the base station, the modified algorithm improves the average CB and ZF sumrates up to 36% and 5%, respectively.
Originele taal2  Engels 

Artikelnummer  8695106 
Pagina's (vantot)  11091112 
Aantal pagina's  4 
Tijdschrift  IEEE Communications Letters 
Volume  23 
Nummer van het tijdschrift  6 
DOI's  
Status  Gepubliceerd  jun 2019 
Vingerafdruk Duik in de onderzoeksthema's van 'An improved dropping algorithm for lineofsight massive MIMO with maxmin power control'. Samen vormen ze een unieke vingerafdruk.
Projecten
 1 Afgelopen

SILIKA: Siliconbased Kaband massive MIMO antenna systems for new telecommunication services SPS
Willems, F. M. J., Willems, F. M. J., Keijzers, A., Keijzers, A., van der Avoird, M., Farsaei, A., Alvarado, A., Willems, F. M. J., Sanders, R., Alvarado, A., Barreiro, A. & de Jonge, M.
1/09/16 → 31/08/20
Project: Onderzoek direct
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