Title :
Projection-based power allocation scheme for joint transmission system
Author :
Yan, Chunyan ; Deng, Ke ; Wang, Hui-Ming
Author_Institution :
Sch. of Electron. & Inf. Eng., Xi´´an Jiaotong Univ., Xi´´an, China
Abstract :
Coordinated Multi-Point (CoMP) transmission or reception is an efficient way to reduce inter-cell interference, improve the spectrum efficiency and coverage in LTE-Advanced systems. Compared with other CoMP technologies, Joint Transmission (JT), which carries out precoding based on the channel information, can achieve better system performance gain. In this paper, a scheme termed the projection-based power allocation is proposed, which combines the joint transmission in the space domain with the power allocation in the frequency domain. The simulation results for TD-LTE-Advanced systems show that the scheme outperforms traditional equal power allocation and power allocation without projection in bit error rate (BER) performance subject to constraints on total power obviously.
Keywords :
Long Term Evolution; interference suppression; precoding; radiofrequency interference; CoMP reception; TD-LTE-Advanced systems; channel information; coordinated multipoint transmission; frequency domain; intercell interference reduction; joint transmission system; precoding; projection-based power allocation scheme; space domain; spectrum efficiency; system performance gain; Bit error rate; Downlink; Frequency domain analysis; Interference; Joints; OFDM; Resource management; BER performance; CoMP; joint transmission; power allocation; projection;
Conference_Titel :
Wireless Communications and Signal Processing (WCSP), 2011 International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4577-1009-4
Electronic_ISBN :
978-1-4577-1008-7
DOI :
10.1109/WCSP.2011.6096719
