Wireless communications is all about for Effective use of radio waves. Understanding of radio channel is the key success factor in wireless communications. Therefore, channel measurements are indispensable for wireless system design (see figure 1). It is the wireless channel that determines the ultimate performance limits of any communication system. Therefore, there are plenty of ongoing and proposed projects on the channel measurements and channel modeling all over the world. Wireless channel (impulse response) measurement equipment which measures, digitizes and stores radio channel impulse response with high resolution in delay, frequency and spatial domain, is called channel sounder. Even though radio channel sounding is a fundamental task for wireless communication engineering, to provide effective and high-quality channel sounding solution is very challenge which it requires special expertise and sophisticated radio channel measurement equipment: channel sounder.