Paper Abstract and Keywords |
Presentation |
2017-04-24 11:20
Efficient Radio Access for Massive Machine-Type Communication
-- Studies of Successive Interference Cancellation and Parallel Interference Cancellation -- Masafumi Moriyama, Kenichi Takizawa, Hayato Tezuka, Masayuki Oodo, Changwoo Pyo, Homare Murakami, Kentaro Ishidu, Fumihide Kojima (NICT) RCS2017-5 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
A rapid increase of uplink traffic is predicted with the spread of IoT (Internet of Things) devices. The 5G (5th generation mobile communications systems) requires that base stations effectively receive small-size packets but massive uplink signals transmitted by the IoT devices. To solve this problem, we have researched and developed techniques to increase number of devices that one base station can accumulate and to decrease delay time. In this paper, we propose an identification technique, a channel estimation method and ISCTs (Interference Suppuration and Cancellation Techniques) to realize massive connection and low latency communication. The ISCTs in this paper consist of SIC (Successive Interference Cancellation) and PIC (Parallel Interference Cancellation). These performances between the SIC and the PIC are compared by computer simulation. As the results of the simulation, we found that signal separation performance of the PIC is superior to that of the SIC since PIC can separate received signals in low SIR (Signal to Interference Ratio), which means difference between received power of each device. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
IoT / Massive Devices / LTE / Random Access / Contention Based Communication / Low Latency / Grant Free / Interference Cancellation |
Reference Info. |
IEICE Tech. Rep., vol. 117, no. 11, RCS2017-5, pp. 23-28, April 2017. |
Paper # |
RCS2017-5 |
Date of Issue |
2017-04-17 (RCS) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
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RCS2017-5 |
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