Investigation Of Long Term Evolution Physical Layer

Abstract

Long Term Evolution (LTE) is the latest standard in the cellular communication. It is a standard developed by the Third Generation Partnership Project (3GPP). 3GGP is referred as a joint standardization partnership that responsible for standardizing Universal Mobile Telecommunications System (UMTS), High-Speed Packet Access (HSPA) and LTE standard. The main objectives of LTE are to provide a high-data-rate, low-latency and packet-optimized radio access technology supporting flexible bandwidth deployments. In conjunction with the latest standard, a new network architecture is developed with the aim to support packet-switched traffic with seamless mobility, quality of service and minimal latency. The new network architecture compromises a single platform network. The research paper provides an overview of the LTE physical layer (PHY), including technologies that are newly deployed to cellular such as Orthogonal Frequency Division Multiple Access (OFDMA) in the downlink transmission and Multiple Input Multiple Output (MIMO) antenna system. The latest MIMO antenna system includes the schemes of Transmit Diversity (TD), Open Loop Spatial Multiplexing (OLSM) and Closed Loop Spatial Multiplexing (CLSM). The research paper focuses on the comparison performance of different number of Quality Channel Indicator (CQI) used during the downlink transmission and the comparison performance between different types of MIMO schemes.Long Term Evolution (LTE) is the latest standard in the cellular communication. It is a standard developed by the Third Generation Partnership Project (3GPP). 3GGP is referred as a joint standardization partnership that responsible for standardizing Universal Mobile Telecommunications System (UMTS), High-Speed Packet Access (HSPA) and LTE standard. The main objectives of LTE are to provide a high-data-rate, low-latency and packet-optimized radio access technology supporting flexible bandwidth deployments. In conjunction with the latest standard, a new network architecture is developed with the aim to support packet-switched traffic with seamless mobility, quality of service and minimal latency. The new network architecture compromises a single platform network. The research paper provides an overview of the LTE physical layer (PHY), including technologies that are newly deployed to cellular such as Orthogonal Frequency Division Multiple Access (OFDMA) in the downlink transmission and Multiple Input Multiple Output (MIMO) antenna system. The latest MIMO antenna system includes the schemes of Transmit Diversity (TD), Open Loop Spatial Multiplexing (OLSM) and Closed Loop Spatial Multiplexing (CLSM). The research paper focuses on the comparison performance of different number of Quality Channel Indicator (CQI) used during the downlink transmission and the comparison performance between different types of MIMO schemes.