This paper presents the design and implementation of a new adaptive dual-antenna array for mitigation of both interference and multipath effects in digital mobile communications at the handset level. This proposed system employs a nonlinear adaptive algorithm in the front end of the receiver to enhance the transmission quality in confined areas. The enhancement is blind since no priori knowledg...

Transmit diversity offers an advantage in the forward link of the cdma2000 system by balancing the spectrum efficiency in the uplink and downlink. Three schemes for performing transmit diversity are examined in this paper – orthogonal transmit diversity, time switched transmit diversity, and selection transmit diversity for vehicular, indoor-outdoor pedestrian and indoor office environments. Al...

Antenna diversity has been used for many years as a method to mitigate multipath fading. For mobile communications, this has usually been conventionally at the base station, although there is an increasing demand for diversity antennas to be implemented at the mobile. The most common occurrence of this is in the Personal Digital Communications (PDC) network deployed in the Far East (1). Mobile ...

in this contribution, a MIMO micro strip patch antenna with four radiating elements is designed3 at 28 GHz. The designed has very low isolation loss between elements. simulated using the CST Microwave simulator. measurement results are also shown paper. Both simulation and studied to analyze performance of antenna. features such as, return loss, VSWR, gain, beam-width radiation pattern analyzed...