m 2.1.3 FDD and TDD Branches of FuTURE Project FuTURE TDD System 2.2.1 Main Features of FuTURE TDD System 2.2.2 Promising Technologies Implemented in FuTURE TDD System 2.2.2.1 Network Architecture and Cellular Topology 2.2.2.2 Physical Layer Techniques 2.2.2.3 Layer 2 and Layer 3 Techniques 2.2.2.4 Intercell Interference Mitigation 2.2.3 FuTURE TDD Trial System and Trial Network 2.2.3.1 Hardware Implementation for FuTURE TDD Trial System 2.2.3.2 Multicell and Multiuser Trial Network 2.2.3.3 Field Test Results of FuTURE TDD Trial System 2.2.4 Achievements and Significance of FuTURE TDD System C 2009 by Taylor & Francis Group, LLC Long Term Evolution: 3GPP LTE Radio and Cellular Technology 2.3 TD-SCDMA, LTE, and FuTURE TDD 2.3.1 Similarities among TD-SCDMA, LTE TDD, and FuTURE TDD 2.3.2 Enhancement of FuTURE TDD to TD-SCDMA Evolution Map from TD-SCDMA to FuTURE 2.4.1 Key Technology Evolution Map 2.4.1.1 Generalized Distributed Antenna Arrays Combined with Dynamical Channel Allocation 2.4.1.2 Improved Joint Detection 2.4.1.3 Higher Spreading Factor and Chip Rate 2.4.1.4 Virtual Antenna Array 2.4.1.5 MIMO OFDMA 2.4.2 System Evolution Map Bibliography FuTURE Project in China 2.1.1 Background of FuTURE Project In recent years, along with the continuous development of network and com- munication technologies and the global commercialization of the 3G (3rd Generation Mobile Communication System), the support for the data service and unsymmetrical service has encountered a greater improvement compared with the 2G (2nd Generation Mobile Communication System), and also the diversity of services is better. At the same time, the requirements for higher data rate and higher quality wireless communication service are brought forward by users. On the one hand, the conflict of rapidly growing numbers of users and limited bandwidth resources becomes outstanding, SO the spectrum efficiency of system should be improved by adopting some advanced technologies. On the other hand, it has been proved in both theory and practice that some