TY - GEN
T1 - New pilot designs and ICI mitigation for OFDM downlink systems based on IEEE 802.16m standards over high speed vehicular channels
AU - Min, Hyunkee
AU - Kim, Jihyung
AU - Kim, Hyungjong
AU - Kim, Dongkyu
AU - Kwon, Dong Seung
AU - Hong, Daesik
PY - 2009
Y1 - 2009
N2 - Two new pilot patterns and channel estimation methods robust to inter-channel-interference (ICI) caused by fast fading channels are proposed which are applicable to 802.16m standards. A number of clusters of pilot subcarriers are used for channel estimation. In addition, the number of needed parameters for channel estimation is reduced by some properties of ICI in the time and frequency domains. Simulation results show that the proposed channel estimation has good bit-errorrate (BER) performance compared to conventional method based on 802.16m standards at the velocity of 350 km/h and has the same performance at the velocity of 3 km/h. Moreover, if the target BER is lower than the supportable BER of conventional method with uncoded 16QAM, then the proposed method can be better option compared to diminish the modulation scheme as 8PSK considering both BER and throughput.
AB - Two new pilot patterns and channel estimation methods robust to inter-channel-interference (ICI) caused by fast fading channels are proposed which are applicable to 802.16m standards. A number of clusters of pilot subcarriers are used for channel estimation. In addition, the number of needed parameters for channel estimation is reduced by some properties of ICI in the time and frequency domains. Simulation results show that the proposed channel estimation has good bit-errorrate (BER) performance compared to conventional method based on 802.16m standards at the velocity of 350 km/h and has the same performance at the velocity of 3 km/h. Moreover, if the target BER is lower than the supportable BER of conventional method with uncoded 16QAM, then the proposed method can be better option compared to diminish the modulation scheme as 8PSK considering both BER and throughput.
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U2 - 10.1109/WCNC.2009.4917834
DO - 10.1109/WCNC.2009.4917834
M3 - Conference contribution
AN - SCOPUS:70349188578
SN - 9781424429486
T3 - IEEE Wireless Communications and Networking Conference, WCNC
BT - 2009 IEEE Wireless Communications and Networking Conference, WCNC 2009 - Proceedings
T2 - 2009 IEEE Wireless Communications and Networking Conference, WCNC 2009
Y2 - 5 April 2009 through 8 April 2009
ER -