Multi-Antenna Uplink Transmission for LTE-A

Clustered DFT-S-OFDM has been accepted as the uplink multiple access scheme for LTE-Advanced. In this paper, a new transmit diversity with four transmit antennas is proposed for Clustered DFT-S-OFDM system. A modified Frequency Switched Transmit Diversity (FSTD) algorithm is proposed, where the multiple clusters can be divided into two groups by four antennas, thus the number of clusters on each antenna will be reduced. As a result, the PAPR performance of each antenna has been improved. Meanwhile, in order to obtain additional frequency diversity gain, the proposed scheme has introduced more channels by a symbol-based dynamic cluster allocation method, which makes one turbo coded stream transmitted multiple channels. Moreover, the Space-Time Block Coding (STBC) is employed for the two antennas in each group to achieve spatial diversity and coding gain. Simulation results show that the proposed scheme has good PAPR and Bit Block Error Rate (BLER) performance on frequency selective MIMO channels.

[1]  Hyung G. Myung,et al.  Peak Power Characteristics of Single Carrier FDMA MIMO Precoding System , 2007, 2007 IEEE 66th Vehicular Technology Conference.

[2]  Andreas F. Molisch.  Effect of far scatterer clusters in MIMO outdoor channel models , 2003, The 57th IEEE Semiannual Vehicular Technology Conference, 2003. VTC 2003-Spring..

[3]  Daniel Pérez Palomar,et al.  Practical algorithms for a family of waterfilling solutions , 2005, IEEE Transactions on Signal Processing.

[4]  E. Bonek,et al.  Directional macro-cell channel characterization from urban measurements , 2000 .

[5]  D.J. Goodman,et al.  Single carrier FDMA for uplink wireless transmission , 2006, IEEE Vehicular Technology Magazine.

[6]  David Falconer,et al.  Frequency domain equalization for single-carrier broadband wireless systems , 2002, IEEE Commun. Mag..

[7]  Siavash M. Alamouti,et al.  A simple transmit diversity technique for wireless communications , 1998, IEEE J. Sel. Areas Commun..

[8]  Xiaolong Zhu,et al.  Novel Space-Time Coding and Mapping Scheme in Single-Carrier FDMA Systems , 2007, 2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications.

[9]  Ross D. Murch,et al.  A transmit preprocessing technique for multiuser MIMO systems using a decomposition approach , 2004, IEEE Transactions on Wireless Communications.