Bimodal packet aware scheduling for an OFDMA based on-chip RF interconnect

Unlu, Eren; Moy, Christophe

doi:10.1016/j.jpdc.2017.05.002

Cited by 2 publications

(3 citation statements)

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“…To alleviate the drawbacks of the abovementioned MAC techniques, the researchers have been encouraged to use the OFDMA method in WiNoCs [32]. Unlu and Moy [15] proposed an OFDMA-based wired on-chip RF interconnect as an efficient MAC method. In this work, a bandwidth arbitration mechanism that allocates more bandwidth to cache-line carrying long packets has been presented.…”

Section: Related Workmentioning

confidence: 99%

“…Different types of multiple access technique such as frequency division multiple access (FDMA), code division multiple access (CDMA), wavelength division multiple access (WDMA), and orthogonal frequency division multiple access (OFDMA) have been reported for a different kind of NoCs in the previous literature [7,[12][13][14][15][16][17][18]. FDMA and WDMA techniques have some drawbacks such as increasing the bandwidth demand in parallel with increasing core count and requiring many oscillators operating at different frequencies [15]. On the other hand, the CDMA technique in which multiple transmitters can send data simultaneously through orthogonal codes has some difficulties.…”

Section: Introductionmentioning

confidence: 99%

“…e major drawback of this technique is the synchronization problem between multiple transmitters that may result in low-reliability [19]. Among the aforementioned schemes, OFDMA promises some advantages that the researchers have encouraged to use this modulation as the multiple access technique for NoCs [15][16][17][18][19][20][21][22]. So, we use an OFDMA-based wireless communication for intrachip wireless links as well as interchip ones.…”

Section: Introductionmentioning

confidence: 99%

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Scalable THz Network-On-Chip Architecture for Multichip Systems

Tahanian

Tajary

Rezvani

et al. 2020

Journal of Computer Networks and Communications

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While THz wireless network-on-chip (WiNoC) introduces considerably high bandwidth, due to the high path loss, it cannot be used for communication between far apart nodes, especially in a multichip architecture. In this paper, we introduce a cellular and scalable architecture to reuse the frequencies of the chips. Moreover, we use a novel structure called parallel-plate waveguide (PPW) that is suitable for interchip communication. The low-loss property of this waveguide lets us increase the number of chips. Each chip has a wireless node as a gateway for communicating with other chips. To shorten the length of intra- and interchip THz links, the optimum configuration is determined by leveraging the multiobjective simulating annealing (SA) algorithm. Finally, we compare the performance of the proposed THz multichip NoC with a conventional millimeter-wave one. Our simulation results indicate that when the system scales up from four to sixteen chips, the throughput of our design is decreased about 5.8 % , while for millimeter-wave NoC, this reduction is about 21 % . Furthermore, the average latency growth of our system is only 1 % compared with about 40 % increase for the millimeter-wave NoC.

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Section: Related Workmentioning

confidence: 99%