A PHY LTE- Advanced analysis and a Software Defined Radio implementation

Abstract

The capacity, reliability and services demand at high bit rates on cell phone communications are constantly demanding better performance, and together with the RF spectrum limitations force radio systems to achieve great spectral efficiency. In this article we analyze the physical layer (PHY) of the Long Term Evolution Advanced (LTE-A) standard that the workgroup 3GPP (3rd Generation Partnership Project) proposes as a solution to accomplish the 4G (Fourth Generation) compatibility requirements defined by the ITU-R (International Telecommunication Union) including up to 1 Gbps for downlink and 500 Mbps for uplink bit rates [1]. We describe the processes perfomed at the PHY layer in the uplink, and those stages where a free implementation is allowed to full fill the 4G requirements.