Title :
MIMO Antenna Array Impact on Channel Capacity for a Realistic Macro-Cellular Urban Environment
Author :
Vieira, Pedro ; Queluz, Paula ; Rodrigues, António
Author_Institution :
DEETC, Lisbon Polytech. Inst. (ISEL), Lisbon
Abstract :
In multiple input multiple output (MIMO) systems the antenna array configuration in the base station (BS) and mobile station (MS) has a large influence on the available channel capacity. In this paper, we first introduce a new frequency selective (FS) MIMO framework for macro-cells in a realistic urban environment. Next, MIMO configuration characteristics are investigated in order to maximize capacity, mainly the number of antennas and inter-antenna spacing. Channel and capacity simulation results are presented for the city of Lisbon, Portugal, using different antenna configurations. Two power allocations schemes are considered, uniform distribution and FS spatial water-filling. The results suggest optimized MIMO configurations, considering the antenna array size limitations, at the MS side.
Keywords :
MIMO communication; antenna arrays; cellular radio; channel capacity; frequency selective surfaces; MIMO system; antenna array; base station; channel capacity; frequency selective MIMO; interantenna spacing; macrocellular urban environment; mobile station; multiple input multiple output system; spatial water-filling; Antenna arrays; Base stations; Channel capacity; Cities and towns; Frequency; Helium; MIMO; Mobile antennas; RF signals; Receiving antennas;
Conference_Titel :
Vehicular Technology Conference, 2008. VTC 2008-Fall. IEEE 68th
Conference_Location :
Calgary, BC
Print_ISBN :
978-1-4244-1721-6
Electronic_ISBN :
1090-3038
DOI :
10.1109/VETECF.2008.45
