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An approach to achieve zero turnaround time in TDD operation on SDR front-end

Muhammad Aslam (UGent) , Xianjun Jiao (UGent) , Wei Liu (UGent) and Ingrid Moerman (UGent)
(2018) IEEE ACCESS. 6. p.75461-75470
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Abstract
Thanks to the digitization and softwarization of radio communication, the development cycle of new radio technologies can be significantly accelerated by prototyping on software-defined radio (SDR) platforms. However, a slow turnaround time (TT) of the front-end of an SDR for switching from receiving mode to transmitting mode or vice versa, are jeopardizing the prototyping of wireless protocols, standards, or systems with stringent latency requirements. In this paper, a novel solution called BaseBand processing unit operating in Half Duplex mode and analog Radio Frequency front-end operating in Full Duplex mode, BBHD-RFFD, is presented to reduce the TT on SDR. A prototype is realized on the widely adopted AD9361 radio frequency frontend to prove the validity of the proposed solution. Experiments unveil that for any type of application, the TT in time division duplex (TDD) operation mode can be reduced to zero by the BBHD-RFFD approach, with negligible impact on the communication system in terms of receiver sensitivity. The impact is measured for an in-house IEEE 802.15.4 compliant transceiver. When compared against the conventional TDD approach, only a 7.5-dB degradation is observed with the BBHD-RFFD approach. The measured sensitivity of -91 dBm is still well above the minimum level (i.e., -85 dBm at 2.4 GHz) defined by the IEEE 802.15.4 standard.
Keywords
RF front-end, SDR, TDD, turnaround time

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Please use this url to cite or link to this publication:

Chicago
Aslam, Muhammad, Xianjun Jiao, Wei Liu, and Ingrid Moerman. 2018. “An Approach to Achieve Zero Turnaround Time in TDD Operation on SDR Front-end.” Ieee Access 6: 75461–75470.
APA
Aslam, M., Jiao, X., Liu, W., & Moerman, I. (2018). An approach to achieve zero turnaround time in TDD operation on SDR front-end. IEEE ACCESS, 6, 75461–75470.
Vancouver
1.
Aslam M, Jiao X, Liu W, Moerman I. An approach to achieve zero turnaround time in TDD operation on SDR front-end. IEEE ACCESS. Piscataway: Ieee-inst Electrical Electronics Engineers Inc; 2018;6:75461–70.
MLA
Aslam, Muhammad et al. “An Approach to Achieve Zero Turnaround Time in TDD Operation on SDR Front-end.” IEEE ACCESS 6 (2018): 75461–75470. Print.
@article{8588037,
  abstract     = {Thanks to the digitization and softwarization of radio communication, the development cycle of new radio technologies can be significantly accelerated by prototyping on software-defined radio (SDR) platforms. However, a slow turnaround time (TT) of the front-end of an SDR for switching from receiving mode to transmitting mode or vice versa, are jeopardizing the prototyping of wireless protocols, standards, or systems with stringent latency requirements. In this paper, a novel solution called BaseBand processing unit operating in Half Duplex mode and analog Radio Frequency front-end operating in Full Duplex mode, BBHD-RFFD, is presented to reduce the TT on SDR. A prototype is realized on the widely adopted AD9361 radio frequency frontend to prove the validity of the proposed solution. Experiments unveil that for any type of application, the TT in time division duplex (TDD) operation mode can be reduced to zero by the BBHD-RFFD approach, with negligible impact on the communication system in terms of receiver sensitivity. The impact is measured for an in-house IEEE 802.15.4 compliant transceiver. When compared against the conventional TDD approach, only a 7.5-dB degradation is observed with the BBHD-RFFD approach. The measured sensitivity of -91 dBm is still well above the minimum level (i.e., -85 dBm at 2.4 GHz) defined by the IEEE 802.15.4 standard.},
  author       = {Aslam, Muhammad and Jiao, Xianjun and Liu, Wei and Moerman, Ingrid},
  issn         = {2169-3536},
  journal      = {IEEE ACCESS},
  language     = {eng},
  pages        = {75461--75470},
  publisher    = {Ieee-inst Electrical Electronics Engineers Inc},
  title        = {An approach to achieve zero turnaround time in TDD operation on SDR front-end},
  url          = {http://dx.doi.org/10.1109/ACCESS.2018.2883253},
  volume       = {6},
  year         = {2018},
}

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