Improving Coverage and capacity of wireless communication using different spatial diversity techniques
Keywords:
Coverage and capacity, Spatial Diversity, MIMO, LTE, 4G, BERAbstract
Wireless cellular communication has highest growth-rate in last decade[1,2]. Today, due to different coding
and encryption techniques evolved, security is not so much major issue for wireless communication. But modern
communication systems are capacity limited[3], not interference or coverage limited. Spatial diversity techniques use
multiple antenna techniques at transmitter and receiver. Techniques like SISO, SIMO, MISO and MIMO gives improved
spectral efficiency and better capacity and coverage to cellular communication with limited bandwidth. MIMO found to
be best among four[4],[5],[6] when compared for capacity of channel. Advanced digital communication systems or
modern wireless communication systems like 4G uses MIMO to obtain all benefits over 3G.