Implementation of a Multi-Core Data Link Layer Processor for THz Communication

Lopacinski, Lukasz; Eissa, Mohamed Hussein; Panić, Goran; Brzozowski, Marcin; Hasani, Alireza; Kraemer, Rolf

doi:10.1109/vtcspring.2018.8417522

Cited by 5 publications

(9 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The analytical results were finally validated through Monte Carlo simulations. APPENDIX A PROOF OF (11) With the PDF of |h pf,k | given by ( 3), ( 9) can be rewritten as…”

Section: Discussionmentioning

confidence: 99%

“…Clearly from (11), the diversity order attained by Type I-HARQ-aided THz communications can be obtained, where the diversity order is used to gauge the number of degrees of freedom in the communication system. More precisely, the diversity order is defined as the ratio of the outage probability to the transmit SNR on a log-log scale as [14]…”

Section: A Type-i Harq-aided Thz Communicationsmentioning

confidence: 99%

“…There are a few works that have been proposed for the reliable THz communications [8]- [11]. In particular, In [8], highly directional antennas were proposed to establish reliable THz links.…”

Section: Introductionmentioning

confidence: 99%

“…In [10], a mixed THz-radio frequency wireless architecture was devised to provide a promising reliable backhaul-fronthaul solution. Moreover, by noticing that hybrid automatic repeat request (HARQ) is a reliable transmission technique, HARQ assisted THz communications were proposed to investigate the relationship between the BER and the energy efficiency in [11], in which the discussions are conducted based on system-level simulations. To the best of our knowledge, it lacks of the theoretical analysis for the performance investigation on HARQ-aided THz communications in the literature.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Outage Probability Analysis of HARQ-Aided Terahertz Communications

Song¹,

Zheng²,

Dou³

et al. 2022

Preprint

View full text Add to dashboard Cite

Although terahertz (THz) communications can provide mobile broadband services, it usually has a large path loss and is vulnerable to antenna misalignment. This significantly degrades the reception reliability. To address this issue, the hybrid automatic repeat request (HARQ) is proposed to further enhance the reliability of THz communications. This paper provides an in-depth investigation on the outage performance of two different types of HARQ-aided THz communications, including Type-I HARQ and HARQ with chase combining (HARQ-CC). Moreover, the effects of both fading and stochastic antenna misalignment are considered in this paper. The exact outage probabilities of HARQ-aided THz communications are derived in closed-form, with which the asymptotic outage analysis is enabled to explore helpful insights. In particular, it is revealed that full time diversity can be achieved by using HARQ assisted schemes. Besides, the HARQ-CC-aided scheme performs better than the Type-I HARQ-aided one due to its high diversity combining gain. The analytical results are eventually validated via Monte-Carlo simulations.

show abstract

“…The analytical results were finally validated through Monte Carlo simulations. APPENDIX A PROOF OF (11) With the PDF of |h pf,k | given by ( 3), ( 9) can be rewritten as…”

Section: Discussionmentioning

confidence: 99%

Section: A Type-i Harq-aided Thz Communicationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Outage Probability Analysis of HARQ-Aided Terahertz Communications

Song¹,

Zheng²,

Dou³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…The uncomplicated HARQ-I method combined with link adaptation and selective fragment repetitions achieves pretty good efficiency, so we avoid HARQ-II and HARQ-III schemes [42]. We have already proven that implementing HARQ-II and HARQ-III at the targeted data rate is challenging [9], [11], [42]. Fig.…”

Section: F Link Adaptationmentioning

confidence: 99%

Data Link Layer Processor for 100 Gbps Terahertz Wireless Communications in 28 nm CMOS Technology

et al. 2019

View full text Add to dashboard Cite

In this paper, we show our 165 Gbps data link layer processor for wireless communication in the terahertz band. The design utilizes interleaved Reed-Solomon codes with dedicated link adaptation, fragmentation, aggregation, and hybrid-automatic-repeat-request. The main advantage is the low-chip area required to fabricate the processor, which is at least two times lower than the area of low-density paritycheck decoders. Surprisingly, our solution loses only ∼1 dB gain when compared to high-speed low-density parity-check decoders. Moreover, with only 2.38 pJ/bit of energy consumption at 0.8 V, one of the best results in the class of comparable implementations has been achieved. Alongside, we show our vision of a complete 100 Gbps wireless transceiver, including radio frequency frontend and baseband processing. For the baseband realization, we propose a parallel sequence spread spectrum and channel combining at the baseband level. Challenges to high-speed wireless transmission at the terahertz band are addressed as well. To the authors' best knowledge, it is one of the first data link layer implementations that deal with a data rate of ≥ 100 Gbps. INDEX TERMS 100 Gbps wireless, terahertz communication, Reed-Solomon coding, data link layer. The associate editor coordinating the review of this manuscript and approving it for publication was Khursheed Aurangzeb. FIGURE 1. Discussed wireless radio-transceiver system. and baseband implementations. Fig. 1 depicts the architecture of the discussed wireless radio-transceiver. A. CHALLENGES TO HIGH-SPEED WIRELESS COMMUNICATIONS Ultra-high speed wireless systems require either very high bandwidth or very high bandwidth efficiency. In cellular architectures like LTE or 5G high bandwidth efficiency is in the focus. This is due to the limited bandwidth in the available radio bands. Increasing the bandwidth efficiency requires a corresponding increase in signal processing power

show abstract