Analysis of Double space time diversity-CDMA system for frequency-selective channel

In this work, transmission of photograph by using approach Double Space-Time Transmit-Diversity (DSTTD) Code Division Multiple Access (CDMA) designed module is carried over through Wi-Fi networks. Advanced Encryption Standard (AES) set of rules for information encryption and discrete wavelet transform (DWT) technique is occupied for image compression. To conquer high quality picture with fewer signal to noise ratio (SNR). DSTTD encompasses two STBC block units by which we can achieve full-rate and full-diversity. At the Mobile Station, non-linear detector is instigated which embraces of Block-nulling technique, that will separate two STBC block units to offers higher throughput. In specific, LTE-Extended vehicular channel models is taken for DWT and encrypted image transmission and examined. Results spot that system provides improved picture quality for less SNR in the perspective of downlink DL communication.