Title :
The Impact of the Position of MIMO Terminal User´s Hand on Channel Capacity
Author :
Michalopoulou, A. ; Zervos, T. ; Peppas, K. ; Alexandridis, A.A. ; Lazarakis, F. ; Dangakis, K. ; Kaklamani, D.I.
Author_Institution :
Inst. of Informatics & Telecommun., Athens
Abstract :
In this paper the impact of the position of user´s hand holding a multiple-input-multiple-output (MIMO) terminal on system performance and more specifically on channel capacity is investigated. We consider a 4times4 MIMO system with a personal digital assistant (PDA) equipped with a compact array of 4 patch elements. Radiation field patterns of the antenna elements in the presence of the other elements as well as in the presence of a user´s hand are simulated. Different positions of the user´s hand are taken into account. The covariance matrix of the receiving antennas is evaluated by means of the obtained patterns. A correlation-based channel model is considered, where the antenna patterns are incorporated. Extensive simulations showed that the performance of the MIMO systems varies significantly with the position of the user´s hand.
Keywords :
MIMO communication; antenna radiation patterns; channel capacity; covariance matrices; microstrip antenna arrays; mobile handsets; notebook computers; MIMO systems; PDA; antenna elements; channel capacity; compact patch array; correlation-based channel model; covariance matrix; multiple-input-multiple-output terminal; personal digital assistant; radiation field patterns; receiving antennas; users hand position impact; Biological system modeling; Biological tissues; Channel capacity; Humans; Impedance; MIMO; Personal digital assistants; Receiving antennas; System performance; Transmitting antennas;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2007. PIMRC 2007. IEEE 18th International Symposium on
Conference_Location :
Athens
Print_ISBN :
978-1-4244-1144-3
Electronic_ISBN :
978-1-4244-1144-3
DOI :
10.1109/PIMRC.2007.4394332
