Investigations on the design of multiple input multiple output antennas for mobile networks

Abstract

newline There is an ever increasing demand in the mobile networks for higher reliability, higher capacity and increased coverage and everything is expected at a reduced cost. The use of multiple antenna techniques has gained overwhelming interest in the past two decades. The concept of using multiple antenna configuration in the place of a single one has proved to be successful in enhancing data transfer rate, reliability, coverage, security and overall performance of wireless networks. The major advantages of Multi-antenna systems are reliability and higher data rate. For combating the multipath fading problem in an indoor/ outdoor wireless environment, a diversity antenna system is a promising candidate. The application of diversity techniques, most commonly assuming two antennas in a mobile terminal, can enhance the reliability of the communication network without sacrificing an additional spectrum or a transmitted power in a rich scattering environments. There is a constant demand for increased data rate for handheld wireless devices/ gadgets. The increase in datarate of existing wireless communication systems is satisfied by a highly successful and more powerful multiple antenna technique called Multiple Input Multiple Output (MIMO). newline newline