Machine-Type Communications (MTC)

MTC is to support wireless connectivity for a number of devices in cellular systems. Various approaches are proposed including random access channel (RACH) procedure within LTE/3GPP. Most existing schemes are based on handshaking processes to allocate a dedicated channel to a device with data. On the other hand, new approaches employ one-shot transmissions that allow simultaneous device identification and data detection without any handshaking. As a result, when devices have short packets, signaling overhead becomes lower. Compressive sensing (CS) based multiuser detection (MUD) is often considered for one-shot transmission schemes to detect multiple signals from devices of low sparse activity (many devices, but only a fraction of them are active at a time). The resulting group of random access schemes, which are characterized by one-shot transmission and CS based MUD, is called compressive random access (CRA). The list of our related publications is as follows.

 

Journals

  • J. Choi, “Compressive random access with coded sparse identification vectors for MTC,” IEEE Trans. Commun.,vol.pp, no.99, pp. 1-1. [pdf]
  • J. Choi, “Throughput analysis for coded multichannel ALOHA random access,” IEEE Commun. Letters, vol.21, No.8, pp. 1803–1806, August 2017. [pdf]
  • J. Choi, “TDD-sparse index multiple access for joint data detection and device identification in MTC,” J. Communications and Networks (JCN), vol.19, no.3, pp.282–290, June 2017. [pdf]
  • J. Choi and N. Y. Yu, “Compressive channel division multiple access for MTC under frequency-selective fading,” IEEE Trans. Commun., vol.65, No.6, pp. 2715–2725, June 2017. [pdf]
  • J. Choi, “Two-Stage Multiple Access for Many Devices of Unique Identifications over Frequency-Selective Fading Channels,” IEEE J. IoT, vol. 4, no. 1, pp. 162–171, February 2017. [pdf]
  • J. Choi, “Successive Hypothesis Testing based Sparse Signal Recovery and its Application to MUD in Random Access,” IEEE Signal Proc. Letters, vol.24, No.2, pp.166–170, February 2017. [pdf]
  • J. Choi, “Successive Hypothesis Testing Based Sparse Signal Recovery and Its Application to MUD in Random Access,” IEEE Signal Processing Letters (accepted). [pdf]
  • J. Choi, “On the adaptive determination of the number of preambles in RACH for MTC,” IEEE Commun. Letters, vol.20, No.7, pp.1385–1388, July 2016. [pdf]
  • J. Choi, “Sparse index multiple access for multi-carrier systems with precoding,” Journal of Communications and Networks (JCN), vol.18, no.3, pp.439–445, June 2016. [pdf]

Conference Proceedings

  • J. Choi and N. Y. Yu, “Channel Division Multiple Access for MTC under Frequency-Selective Fading,” in Proc. IEEE ICC 2017, Paris, France, May 2017. [pdf]
  • J. Choi, “Single-Carrier Index Modulation and CS Detection,” in Proc. IEEE ICC 2017, Paris, France, May 2017. [pdf]
  • J. Choi, “On the Stability and Throughput of Compressive Random Access in MTC,” in Proc. IEEE ICC 2017, Paris, France, May 2017. [pdf]
  • J. Choi, K. Lee, and N. Y. Yu, “Compressive Random Access Using Multiple Resource Blocks for MTC,” in Proc. IEEE Globecom (Workshop on Emerging Technologies for 5G Wireless Cellular Networks), Dec. 2016. [pdf]
  • J. Choi, K. Lee, Y. Lee, and N. Y. Yu, “Secure Compressive Random Access for Meter Reading in Smart Grid using Multi-Antenna Access Point,” in Proc. IEEE SmartGrid Comm-2016, Sydney, Australia, Nov. 2016. [pdf]
  • J. Choi and N. Y. Yu, “On the Correctness of Coherence in the Determination of Preambles for Compressive Random Access,” in Proc. IEEE ICTC 2016, Oct. 2016, Jeju, Korea. [pdf]
  • J. Choi, “On the Throughput Comparison between Multi-Channel ALOHA and Compressive Random Access,” in Proc. IEEE ICTC 2016, Oct. 2016, Jeju, Korea. [pdf]
  • J. Choi, “Joint Device Identification and Data Detection in Physical Layer for Many Devices in IoT,” in Proc. IEEE ICTC 2016, Oct. 2016, Jeju, Korea. [pdf]
  • J. Choi, “On the Sparsity for Random Access in Machine Type Communications under Frequency-Selective Fading,” in Proc. IEEE ICC 2016, Malaysia, May 2016. [pdf]