Additive mapping scheme represents alternative signals of selected mapping (SLM) by linear combination of signals in time domain for peak to average power ratio (PAPR) reduction in orthogonal frequency division multiplexing (OFDM) system. It can reduce the computational complexity considerably without sacrificing PAPR reduction performances especially for the OFDM system with quadrature amplitu...

Abstract— This paper investigates different diversity concepts for OFDM systems. These are space frequency block codes (SFBC) and code division multiplexing (CDM). The performance of both and of combinations of both is compared for coded OFDM systems in a Rayleigh fading channel. The SFBCs and CDM applied in this paper have in common that they have no rate loss and thus do not decrease the band...

In this paper we evaluate the performance of LTE-Downlink System with different Transmit diversity and Spatial multiplexing MIMO modes in LTE-downlink. Here we analysis performance on BLER-Block Error Rate and Data Throughput vs SNR-Signal to Noise Ratio. Two Transmit Diversity schemes Space Frequency Block Codes (SFBC) and Frequency Switched Transmit Diversity (FSTD) and two Spatial Multiplexi...