Zobrazeno 241 - 250
of 2 109
pro vyhledávání: '"Larsson, Erik"'
Accurate and robust positioning in multipath environments can enable many applications, such as search-and-rescue and asset tracking. For this problem, ultra-wideband (UWB) technology can provide the most accurate range estimates, which are required
Externí odkaz:
http://arxiv.org/abs/1511.04045
Publikováno v:
International Conference on Communications (ICC), IEEE, May 2016
The spatial characteristics of the out-of-band radiation that a multiuser MIMO system emits in the environment, due to its power amplifiers (modeled by a polynomial model) are nonlinear, is studied by deriving an analytical expression for the continu
Externí odkaz:
http://arxiv.org/abs/1510.05513
Publikováno v:
IEEE Transactions on Communications, vol. 64, no. 12, pp. 5050-5063, Dec. 2016
In massive MIMO, most precoders result in downlink signals that suffer from high PAR, independently of modulation order and whether single-carrier or OFDM transmission is used. The high PAR lowers the power efficiency of the base station amplifiers.
Externí odkaz:
http://arxiv.org/abs/1510.01397
Massive MIMO systems, where the base stations are equipped with hundreds of antenna elements, are an attractive way to attain unprecedented spectral efficiency in future wireless networks. In the "classical" massive MIMO setting, the terminals are as
Externí odkaz:
http://arxiv.org/abs/1509.08305
Autor:
Björnson, Emil, Larsson, Erik G.
This paper considers three aspects of Massive MIMO (multiple-input multiple-output) communication networks that have received little attention in previous works, but are important to understand when designing and implementing this promising wireless
Externí odkaz:
http://arxiv.org/abs/1509.06517
This paper considers the jointly optimal pilot and data power allocation in single cell uplink massive MIMO systems. A closed form solution for the optimal length of the training interval is derived. Using the spectral efficiency (SE) as performance
Externí odkaz:
http://arxiv.org/abs/1509.02633
In this paper, a new multi-cell MMSE detector is proposed for massive MIMO systems. Let $K$ and $B$ denote the number of users in each cell and the number of available pilot sequences in the network, respectively, with $B = \beta K$, where $\beta \ge
Externí odkaz:
http://arxiv.org/abs/1509.01756
In this paper, a new multi-cell MMSE precoder is proposed for massive MIMO systems. We consider a multi-cell network where each cell has $K$ users and $B$ orthogonal pilot sequences are available, with $B = \beta K$ and $\beta \ge 1$ being the pilot
Externí odkaz:
http://arxiv.org/abs/1509.01758
To ensure safety in confined environments such as mines or subway tunnels, a (wireless) sensor network can be deployed to monitor various environmental conditions. One of its most important applications is to track personnel, mobile equipment and veh
Externí odkaz:
http://arxiv.org/abs/1509.00238
Autor:
Savic, Vladimir, Larsson, Erik G.
Location awareness in wireless networks may enable many applications such as emergency services, autonomous driving and geographic routing. Although there are many available positioning techniques, none of them is adapted to work with massive multipl
Externí odkaz:
http://arxiv.org/abs/1509.00202