TY - GEN
T1 - Effect of Estimation Timing Error on Pre-TDE for Narrowband Uplink NOMA
AU - Yoshida, Kei
AU - Kameda, Suguru
AU - Suematsu, Noriharu
N1 - Funding Information:
ACKNOWLEDGMENT This work was partly supported by Japan Society for the Promotion of Science (JSPS) KAKENHI Grant Numbers JP16H04361 and JP16KK0139.
Publisher Copyright:
© 2020 IEEE.
PY - 2020/10/19
Y1 - 2020/10/19
N2 - For realizing narrowband IoT such as sensor networks, we investigate narrowband uplink non-orthogonal multiple access (NOMA), which has high spectrum efficiency. In the narrowband uplink NOMA system, multiple access interference (MAI) occurs because the signals from non-orthogonal nodes propagate different time selective fading channels. In this situation, time-domain pre-equalization (Pre-TDE) can suppress MAI. Since narrowband communication has a small data rate and long data communication time, the effect of estimation timing error t on pre-TDE is large. In this paper, to clarify the effect of fading on narrowband uplink NOMA we evaluated the effect of the estimation timing error. As a result of link-level simulation considering the estimation timing error, we verified that bit error rate (BER) is less than 10-3 when the estimation timing error is within 1.5ms from the channel estimation value.
AB - For realizing narrowband IoT such as sensor networks, we investigate narrowband uplink non-orthogonal multiple access (NOMA), which has high spectrum efficiency. In the narrowband uplink NOMA system, multiple access interference (MAI) occurs because the signals from non-orthogonal nodes propagate different time selective fading channels. In this situation, time-domain pre-equalization (Pre-TDE) can suppress MAI. Since narrowband communication has a small data rate and long data communication time, the effect of estimation timing error t on pre-TDE is large. In this paper, to clarify the effect of fading on narrowband uplink NOMA we evaluated the effect of the estimation timing error. As a result of link-level simulation considering the estimation timing error, we verified that bit error rate (BER) is less than 10-3 when the estimation timing error is within 1.5ms from the channel estimation value.
KW - IoT
KW - NOMA
KW - Narrowband communication
KW - SIC
KW - Time selective fading channel
KW - Time-domain pre-equalization
KW - Uplink communication
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U2 - 10.1109/WPMC50192.2020.9309481
DO - 10.1109/WPMC50192.2020.9309481
M3 - Conference contribution
AN - SCOPUS:85099573828
T3 - International Symposium on Wireless Personal Multimedia Communications, WPMC
BT - WPMC 2020 - 23rd International Symposium on Wireless Personal Multimedia Communications
PB - IEEE Computer Society
T2 - 23rd International Symposium on Wireless Personal Multimedia Communications, WPMC 2020
Y2 - 19 October 2020 through 26 October 2020
ER -