Title :
Ergodic system capacity of mobile MIMO systems using adaptive modulation
Author :
Oborina, Alexandra ; Moisio, Martti ; Koivunen, Visa
Author_Institution :
Dept. of Signal Process. & Acoust., Aalto Univ., Aalto, Finland
Abstract :
In this paper the performance of multiple-input multiple-output (MIMO) system in the UTRAN Long Term Evolution (LTE) standard is evaluated by means of ergodic system capacity in low (3 km/h), medium (30 km/h) and high (120 km/h) mobility scenarios. The impact of adaptive modulation as well as Hybrid ARQ (HARQ) with Chase Combining to the distribution of effective SINR is established analytically and validated by simulations. A model for ergodic system capacity employing adaptive modulation and HARQ is developed. The simulation results show that adaptive modulation combined with HARQ increases the MIMO system performance significantly especially in low mobility case, and smaller reduction of rate is experienced in high mobility scenarios.
Keywords :
Long Term Evolution; MIMO communication; adaptive modulation; mobile communication; HARQ; Long Term Evolution; UTRAN LTE standard; adaptive modulation; chase combining; ergodic system capacity; hybrid ARQ; mobile MIMO systems; multiple-input multiple-output system; Adaptation model; Adaptive systems; Interference; MIMO; Modulation; Receivers; Signal to noise ratio;
Conference_Titel :
Personal Indoor and Mobile Radio Communications (PIMRC), 2010 IEEE 21st International Symposium on
Conference_Location :
Instanbul
Print_ISBN :
978-1-4244-8017-3
DOI :
10.1109/PIMRC.2010.5671716
