[vc_empty_space][vc_empty_space]
High mobility data symbol based channel estimation for downlink OFDMA IEEE 802.16e standard
Galih S.a,b, Karlina R.a, Nugroho F.c, Irawan A.c, Adiono T.a, Kurniawan A.a
a School of Electronics and Informatics, Bandung Institute of Technology, Indonesia
b Department of Informatics, Widyatama University, Indonesia
c Versatile Silicon, PAU Building, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]High mobility communication systems need suitable channel estimation to cope high frequency selectivity and time variation channel. In recent study on Dowwnlink OFDMA Mobile WiMAX, channel estimation was done by exploiting pilot from preamble[3] instead of pilot from data symbol due to ununiformly pilot spacing in this standard. In this paper we propose to obtain channel transfer function by exploiting pilot at data symbol. We try two interpolation scheme for this data symbol based channel estimation. First is two dimensial MMSE/Linear interpolation scheme. Linear Interpolation was carried out at time domain and MMSE Interpolation was performed at frequency Domain. The other is Linear Interpolation for both dimension/domain. Based on our simulation, it is proven that the data symbol based channel estimation method have better performance compare with preamble based channel estimation method. It is also shown that the MMSE interpolation at frequency domain achieve better performance at higly dispersive channel (ITU-B vehicular). ©2009 IEEE.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Channel estimation method,Channel transfer functions,Data symbols,Dispersive channels,Frequency domains,High mobility,High-frequency selectivity,IEEE 802.16e,Interpolation schemes,Linear Interpolation,Mobile WiMAX,Time domain,Time-variation channel[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Channel estimation,Mobile WiMAX,OFDMA[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1109/ISCIT.2009.5341119[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]