nter-Band Intra-Band Aggregation Aggregation Contiguous Non-Contiguous Non-Contiguous Option Transmitter Architecture Single (Baseband + IFFT + D/A Converter + Mixer + Power Amplifier) Multiple (Baseband + IFFT + D/A Converter), Single (Stage-1 IF Mixer + IF Combiner + Stage-2 RF Mixer + Power Amplifier) Multiple (Baseband + IFFT + D/A Converter + Mixer), Low- Power RF Combiner and Single Power Amplifier Multiple (Baseband + IFFT + Yes (depending on D/A Converter + Mixer + the specific E-UTRA Power Amplifier), High-Power bands being Combiner to Single Antenna aggregated) or Dual Antennas Receive Characteristics Inter-Band Intra-Band Aggregation Aggregation Contiguous Non-Contiguous Non-Contiguous Option Receiver Architecture Single (RF + FFT + Baseband) with BW > 20 MHz Multiple (RF + FFT + Baseband) with BW < 20 MHz 11.5 3GPP LTE-Advanced multi-carrier operation emissions) and receiver aspects (reference sensitivity level, adjacent channel selectivity, narrow-band blocking, receiver inter-modulation, and demodulation performance requirements). Some of the transmit/ receive characteristics for carrier aggregation scenarios of interest are summarized in Table 11-4. References IEEE 802.16-2009, IEEE Standard for Local and Metropolitan Area Networks, Part 16: Air Interface for Broadband Wireless Access Systems, May 2009. [2] P802.16m/D6, IEEE Standard for Local and Metropolitan Area Networks - Part 16: Air Interface for Broadband Wireless Access Systems, Advanced Air Interface, May 2010. [3] Report ITU-R M.2135-1, Guidelines for Evaluation of Radio Interface Technologies for IMT-Advanced, December 2009. [4] Report ITU-R M.2134, Requirements Related to Technical System Performance for IMT-Advanced Radio Interface(s), November 2008. [5] Y. Wang, K.I. Pedersen, T.B. Sorensen, P.E. Mogensen, "Resource allocation considerations for multi- carrier LTE-Advanced systems operating in backward compatible mode," IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications, 2009. Shi Songsong, Feng Chun