A new space-time differentially coded DS-CDMA transceiver system for reliable communications

In this work, we present a new space-time differentially coded transceiver system for DS-CDMA applications. The proposed solution allows us to embed transmit diversity into the space-time-frequency (STF) domain in a simple yet effective way. It also enables a simple scheme for differential detection and data separation at the receiver without channel state information (CSI). Simulation results in comparison with other existing approaches demonstrate significant bit-error-rate (BER) performance improvement over a wide range of system parameters, such as signal-to-noise ratio (SNR) and near-far ratio (NFR).