부산대학교 도서관

With the update of existing technology, technology growth has become extremely significant in all industries. Wireless communication is a popular and exciting topic in the world of communication. The demand for wireless devices are growing every day, putting a strain on bandwidth and power resources. The bandwidth is well limited to support a large number of users, but it comes at the expense of other characteristics such as interference between signals of the same bandwidth, coverage area, and so on. A single band-limited channel is used to transmit the narrowband signal. Narrowband interference is reduced using spread spectrum techniques. The narrowband signal is mixed with pseudo random noise, and the intended users can remove the noise using the same pseudo code. In order to transmit the signal to long distance with the reduced distortion, the modulation in performed on the message and spreaded. This Narrow-band suppression techniques is designed in FPGA and Performance of the system is analyzed. The combination of modulation and Spreading technique improve the system performance, power consumption. The system is analyzed with the existing technologies and it is found that estimated power for FH/BPSK is 113.45 mW in FPGA.