Title :
Power coverage and multipath diversity for indoor distributed antenna system based on wideband channel measurement at 6 GHz
Author :
Xin, Liang ; Zhang, Jianhua ; Xiong, Fei ; Sun, Yanliang ; Sheng, Nan
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
In this paper, power coverage characteristic and multipath diversity scheme for downlink simulcast distributed antenna system (DAS) are investigated based on a wideband channel measurement at 6 GHz for indoor scenario. With measured path loss (PL), power coverage property is analyzed. Compared with centralized antenna system (CAS), DAS can introduce 5-17 dB PL gain, and achieve a higher coverage ratio. Then, we propose a multipath diversity algorithm to improve the received power through introducing differential delay and phase rotation simultaneously at the transmitter (Tx). Based on the measured data, it has 1.67 dB power gain in line of sight (LOS) case averagely, better than the scheme without transmission control and multipath antenna diversity (MAD) algorithm.
Keywords :
broadband antennas; diversity reception; indoor radio; telecommunication channels; MAD algorithm; centralized antenna system; differential delay; downlink simulcast distributed antenna system; frequency 6 GHz; indoor distributed antenna system; line of sight; multipath antenna diversity; multipath diversity scheme; path loss; phase rotation; power coverage; power coverage characteristic; power coverage property; transmitter; wideband channel measurement; Antenna arrays; Antenna measurements; Delay; Gain; Power measurement; Radio link; Wireless communication;
Conference_Titel :
Wireless Personal Multimedia Communications (WPMC), 2012 15th International Symposium on
Conference_Location :
Taipei
Print_ISBN :
978-1-4673-4533-0
