Communication Signal Processing Laboratory (CSP lab) has been directed by Professor Seungwon Choi since 1992 when he joined Hanyang University. The CSP lab performs researches and developments of various signal processing technologies mainly in the area of SDR (Software Defined Radio) and adaptive array antenna including Smart Antenna (SA) and MIMO (Multi-Input and Multi-Output). The CSP lab has published about 43 SCI-level papers and got registered about 30 international patents. The CSP lab has also developed proto-type SA base stations for WiBro/WiMAX, HSDPA, and CDMA2000. The CSP lab has also proposed SA API (Application Program Interface) for standardizing SA operating in SDR network. The CSP lab established a venture company, SAS Tech Co. Ltd., through which the state-of-the-art technologies developed by CSP lab has been commercialized.