Title :
Performance analysis of physical downlink and uplink channels in TD-LTE system
Author :
Wu, Muzi ; Peng, Yuexing ; Yang, Xiao ; Zhang, Xiaofeng ; Wang, Wenbo
Author_Institution :
Wireless Signal Process. & Network Lab., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
TD-LTE as the evolution of TD-SCDMA is designed to support high data rates and reduced radio link delays. To reach these goals, new air interface is specified for TD-LTE. In this paper, the performance of physical uplink and downlink channels are evaluated by means of numerical simulations. Since the deployment of smart antennas is the unique feature of TD-SCDMA, special attentions are paid to the case of TD-LTE with dual-polarized smart antennas scheme, which can greatly facilitate practical application by smaller antenna array size and better stability relative to traditional mono-polarized smart antennas. The error performance is simulated for multiple physical channels with both mono- and dual-polarized smart antennas, and the simulation results on link level show that the dual-polarization scheme pays slight penalty of signal-to-noise ratio (SNR) loss, but brings significant benefits to practical application. It is intensively recommended to deploy the dual-polarized smart antennas in TD-LTE.
Keywords :
Long Term Evolution; adaptive antenna arrays; code division multiple access; electromagnetic wave polarisation; numerical analysis; radio links; wireless channels; SNR; TD-LTE system; TD-SCDMA; air interface; antenna array; dual-polarized smart antenna; long term evolution; monopolarized smart antenna; numerical simulation; performance analysis; physical downlink channel; physical uplink channel; radio link delay; signal-to-noise ratio; Antennas; Degradation; Downlink; Frequency modulation; MIMO; OFDM; Resource management;
Conference_Titel :
Communication Technology (ICCT), 2010 12th IEEE International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-6868-3
DOI :
10.1109/ICCT.2010.5689232
