Design Simulation of ZCT- Precoding and Improved PTS Scheme based Efficient PAPR Reduction System for 4G-OFDM Communication System

Abstract

Different modulation techniques, including Code Division Multiple Access (CDMA) and Orthogonal Frequency Diversion Multiplexing (OFDM), have been developed to meet growing demand for high speed communication. Multiplexing is an FDM scheme used as the digital multicarrier modulation process. A broad variety of orthogonal carriers are used for the transportation of data. Data are separated by into several parallel channel sources, one for each subcontractor. Each sub-carrier is modulated at low symbol rates by a standard (such as QPSK) modulation system, which preserves total data rates in the same bandwidth similar to traditional single-carrier modulation. In the OFDM system there are a certain amount of parallel lower data sub-carriers that transmit a stream that contains high-speed data. Due to the long symbolic length, Inter Symbol Interference (ISI) is avoided, since each data rate is much less the overall data rate.MIMO OFDM also qualifies as a 4G-standard due to its wide band width frequency, since the need for high speed data communication has increased. Although MIMO OFDM has many merits, its power ratios are high to average. This work proposes a new technological approach based on a constant module algorithm to eradicate the issue of ICI, high out-of-band radiation, and the deterioration of bit error rate.In proposed research extensive review of peak average to power ratio in wireless 4G communication system has been studied and improved partial transmit sequence, cooperative partial transmit sequence and Zadoff-Chu matrix Transform (ZCT) precoded PAPR reduction technique based system has been proposed. The proposed system improves the performance of communication system significantly which can be verified with CCDF curves for different test cases of modulation parameters.