Bounded Selective Spanning With Extended Fast Enumeration for MIMO-OFDM Systems Detection

Wu, Yun; McAllister, John

doi:10.1109/tcsi.2017.2706722

Cited by 4 publications

(8 citation statements)

References 19 publications

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“…21a; T 1 − T 4 are enumeration and APED calculations, while T 5 identifies the solution with minimum APED. The work in [41] demonstrates that highperformance, efficient accelerators for SD can be enabled by using networks of fine-grained SIMD processors; this was extended in [40] to demonstrate how such accelerators can be automatically synthesised from a task graph such as that in Fig. 21a.…”

Section: Accelerator Architecturementioning

confidence: 99%

“…Bounded Selective Spanning with Extended Fast Enumeration (BSS-EFE) is the state-of-the-art BFS SD, allowing configuration for different IoT MIMO scales, detection accuracy and accelerator cost whilst avoiding the use of symbol list memory and sorting operators [19]. However, BSS-EFE suffers drawbacks which limit its efficiency:…”

Section: Introductionmentioning

confidence: 99%

“…Selective Spanning with Fast Enumeration (SSFE) avoids sort operations by employing a symbol enumeration heuristic, again enabling real-time detection [35] but has limited configurability. The promise of SSFE, though, led to the emergence of Boundary Selective Spanning with Extended Fast Enumeration (BSS-EFE) [19]. So far as the authors are aware, BSS-EFE is the state-of-the-art in configurable SD.…”

Section: Introductionmentioning

confidence: 99%

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Configurable Quasi-Optimal Sphere Decoding for Scalable MIMO Communications

McAllister

2021

IEEE Trans. Circuits Syst. I

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Sphere Decoding (SD) enables real-time quasioptimal symbol detection for Multiple-Input Multiple-Output (MIMO) communication systems via custom circuit accelerators. Configurable SDs allow accelerator cost to be balanced with detection accuracy for the most constrained MIMO environments, such as power-constrained Internet-of-Things (IoT) scenarios. However this high detection accuracy comes at high accelerator cost. This paper proposes a novel configurable SD which addresses this issue. A Robust Bounded Spanning with Fast Enumeration (R-BSFE) approach employs novel strategies for channel matrix pre-processing and symbol enumeration to maintain quasi-ML accuracy whilst reducing complexity by up to 74%. This enables accelerators for 802.11n on Xilinx FPGA with significantly lower cost and higher throughput. To the best of the authors' knowledge, the accelerators produced are the highest performance, lowest cost quasi-ML SD accelerators on record.

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Section: Accelerator Architecturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Configurable Quasi-Optimal Sphere Decoding for Scalable MIMO Communications

McAllister

2021

IEEE Trans. Circuits Syst. I

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“…The simulated result shows a maximum throughput of 2.2 Gbps, which so far is the fastest hardware of FSD implementation in our record. K-best is another popular SD accelerator architecture and has been actively studied recently [13][14][15][16][17][18][19][20][21][22]. The K-Best SD is based on breadth-first search, which considers only the best (K) candidates at each level to be passed to the next level of the search tree.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, ML could be considered a special case of K-best with a sufficiently large K [13]. The conventional K-best sphere detectors use the same K value at all levels [13][14][15][16][17][18], while recent developments offer more flexible and efficient designs [19][20][21][22]. Among those, several practical K-Best SD has been prototyped on hardware [16,17,[19][20][21][22]28] that show advantages over FSD in both complexity and throughput.…”

Section: Introductionmentioning

confidence: 99%

Sub-optimal Deep Pipelined Implementation of MIMO Sphere Detector on FPGA

Nguyen¹,

Tran

Ngo

et al. 2023

EAI Endorsed Trans Ind Net Intel Syst

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Sphere detector (SD) is an effective signal detection approach for the wireless multiple-input multiple-output (MIMO) system since it can achieve near-optimal performance while reducing significant computational complexity. In this work, we proposed a novel SD architecture that is suitable for implementation on the hardware accelerator. We first perform a statistical analysis to examine the distribution of valid paths in the SD search tree. Using the analysis result, we then proposed an enhanced hybrid SD (EHSD) architecture that achieves quasi-ML performance and high throughput with a reasonable cost in hardware. The fine-grained pipeline designs of 4 × 4 and 8 × 8 MIMO system with 16-QAM modulation delivers throughput of 7.04 Gbps and 14.08 Gbps on the Xilinx Virtex Ultrascale+ FPGA, respectively.

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Effect of uniform time on the transmission of signals in rail open systems

Chrzan

2022

AoT

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Railroads and the Rail Traffic Control Systems installed on them in Poland have recently been undergoing rapid technological development (Brodzik, 2019). Modern transportation solutions are susceptible to electromagnetic interference (Paś and Rosiński, 2017). Development of modern railroad infrastructure means not only stations and modern rolling stock, but also safe and reliable train traffic control systems based on the latest telecommunication and IT technologies (Ciszewski et al., 2017). In the last century these technologies were still considered dangerous and were introduced with great fear. Today, computerized systems for controlling railway traffic on the track are becoming the norm. Systems are created as "overlays" for existing relay systems or autonomous systems are built based on microprocessor systems (Burdzik et al., 2017). Today it is hard to imagine a modern control room without computer equipment. The introduction of microprocessor technology to railroad traffic control devices took place at the turn of the century. However, the use of modern radio systems in rail transport is the moment when technology based on the appeared in the world LTE (Long-Term evolution) standard. The development of modern data transmission technologies is integrally connected with the mobility of its users. In the presented article the author has tried to determine the impact of transmission synchronization on the basic transmission parameters of LTE signal (Chrzan, 2021). The convenience of using rail communications for its users is the possibility of uninterrupted access to data transmission services along the entire route of the train. Therefore, the research presented in this article was focused on the use of the public radio communication network for passenger data transmission and data transmission for railroad needs. The article presents the influence of synchronisation of data transmission in open railway systems using GPS (Global Positioning System) technology. It presents a description of the physical phenomena associated with synchronisation, and presents the author's method for carrying out measurements on railway line No. 4. For this purpose, a diagnostic station was built and special software for data transmission encryption was prepared. The process of synchronisation of clocks with the use of uniform time was adopted as the basis. General measurement results and conclusions resulting from the use of open transmission in railway radiocommunication systems synchronised by the GPS system signal are presented.

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Bounded Selective Spanning With Extended Fast Enumeration for MIMO-OFDM Systems Detection

Cited by 4 publications

References 19 publications

Configurable Quasi-Optimal Sphere Decoding for Scalable MIMO Communications

Configurable Quasi-Optimal Sphere Decoding for Scalable MIMO Communications

Sub-optimal Deep Pipelined Implementation of MIMO Sphere Detector on FPGA

Effect of uniform time on the transmission of signals in rail open systems

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