Wireless broadband access has become main driver in telecommunications today. New applications need new technologies who can respond to user expectations. There are different proposal for standardization of wireless broadband access but HSPA+ has become the most used. It's extension to 3G (UMTS) systems towards LTE (Long term evolution). HSPA+ is based on different methods with common goal: to increase speed and quality of packet data connection like Internet browsing, video calls and mobile TV. In 3GPP release 7 new methods have been proposed in for further increase in spectral efficiency and data rate. Those methods are also aiming to decrase overall interference in system. One of new things which will come in 3GPP release 7 is so called MIMO antenna concept. MIMO concept means multiple transmiting antennas on radio base station as well as multiple recieving antenna at mobile terminal side (wheather is mobile station, laptop or similar). MIMO concept also introduces new signal processing techiniques. MIMO is based on two principles: spatial multiplexing and diversityziti. Spatial multiplexing increase packet data rate by transmitting multiple different data streams simuntaniously. From other side diversityziti is increasing signal to interference ratio. In this master thesis MIMO antenna concept is presented. Basic MIMO functionalities are covered. MIMO spatial channel is dicsussed with impact on overall system capacity. Different MIMO methods as part of 3GPP standardization are presented. Teoretical aspects are extended by appropriate simulations performed with Matlab. Also live measurments in HSPA network were performed with TEMS Investigation software (with HSDPA data card) and results are included in thesis.