A NOVEL APPROACH ON PERFORMANCE OPTIMIZATION OF HARDWARE CONSTRAINED RELAYING SYSTEMS
K. Avinash, V. Sony Prasanna · 2014
Abstract- Hardware constraints have been seen in transceivers which create buckle thus degrading the communication system performance. In this work we have presented the impact of hardware faults on the Bi-hop relaying system for amplify and forward (AAF) and decode and forward (DAF) protocols in wireless system. Also Signal to noise distortion ratio is computed which is a function of probability outage (PO). In our work we have derived the expressions for exact probability outages accounting for hardware constraints at source, relay and destination. In this work we have assumed that the two networks are independent and are not disturbed non-identically. This work proves that the performance loss is small at low rates otherwise it can be very sizeable. It is also been proved that the SDNR tends to meet deterministic constant which is inversely proportional to level of constraints or impairments. This stands in converse in ideal hardware case. Finally, we provide primary intend strategy meant for selecting hardware that satisfies the rations of a realistic relaying structure.