Title :
A novel uplink model for multi-user MIMO-OFDM for IEEE 802.16m
Author :
Bandopadhaya, Shuvabrata ; Das, Aruneema ; Roy, Jibendu Sekhar
Author_Institution :
Dept. of Electron. & Telecomm, Silicon Inst. of Technol., Bhubaneswar, India
Abstract :
Multi-user MIMO with OFDM promises broadband data transmission with a direct gain in multiplexing capacity of overall system which is the key feature of next generation wireless standard like IEEE 802.16m. As the uplink channel carries information transmitted by multiple AMS in same time-frequency recourse, the pilot based channel estimation technique is adversely affected by inter-AMS interference. This paper proposes an uplink model to estimating the CTF between individual AMS to servicing ABS with proper pilot-null subcarrier scheduling for interference cancellation with optimum detection technique. This model also provides an improved data transmission scheme by providing diversity at transmitting side.
Keywords :
MIMO communication; OFDM modulation; channel estimation; diversity reception; interference suppression; telecommunication standards; wireless channels; IEEE 802.16m; broadband data transmission; inter-AMS interference; interference cancellation; multi-user MIMO-OFDM; multiplexing capacity; next generation wireless standard; optimum detection technique; pilot based channel estimation technique; pilot-null subcarrier scheduling; time-frequency recourse; transmitting side; uplink channel; uplink model; Channel estimation; MIMO; OFDM; Receiving antennas; Transmitting antennas; Uplink; IEEE 802.16m; Multi-user MIMO; OFDM; Uplink model; Virtual spatial multiplexing;
Conference_Titel :
Signal Processing, Computing and Control (ISPCC), 2013 IEEE International Conference on
Conference_Location :
Solan
Print_ISBN :
978-1-4673-6188-0
DOI :
10.1109/ISPCC.2013.6663395