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Achieving Out-of-Order Performance with Almost In-Order Complexity

Francis Tseng, Yale N. Patt
2008 SIGARCH Computer Architecture News  
The result from processing braids is performance within 9% of a very aggressive conventional out-of-order microarchitecture with almost the complexity of an in-order implementation.  ...  There is still much performance to be gained by out-of-order processors with wider issue widths.  ...  The result is performance within 9% of a very aggressive conventional out-of-order microarchitecture with the complexity closer to the complexity of an in-order implementation.  ... 
doi:10.1145/1394608.1382169 fatcat:fhp5wiblojczbmsukhu7p5g57u

Achieving Out-of-Order Performance with Almost In-Order Complexity

Francis Tseng, Yale N. Patt
2008 2008 International Symposium on Computer Architecture  
The result from processing braids is performance within 9% of a very aggressive conventional out-of-order microarchitecture with almost the complexity of an in-order implementation.  ...  There is still much performance to be gained by out-of-order processors with wider issue widths.  ...  The result is performance within 9% of a very aggressive conventional out-of-order microarchitecture with the complexity closer to the complexity of an in-order implementation.  ... 
doi:10.1109/isca.2008.23 dblp:conf/isca/TsengP08 fatcat:ic5swgwygjgavgvqqusvpurq5q

A Low-Complexity Detector for Large MIMO Systems and Multicarrier CDMA Systems

K. Vishnu Vardhan, S.K. Mohammed, A. Chockalingam, B. Sundar Rajan
2008 IEEE Journal on Selected Areas in Communications  
In large MC-CDMA systems with hundreds of users, the proposed detector is shown to achieve near single-user performance at an average per-bit complexity linear in number of users, which is quite appealing  ...  We present a low-complexity detector which achieves uncoded near-exponential diversity performance for hundreds of antennas (i.e., achieves near SISO AWGN performance in a large MIMO fading environment  ...  MMSE-LAS detectors achieve almost the same performance.  ... 
doi:10.1109/jsac.2008.080406 fatcat:uuijfokehre63mz6osd55zgbxe

A software-hardware hybrid steering mechanism for clustered microarchitectures

Qiong Cai, Josep M. Codina, Jose Gonzalez, Antonio Gonzalez
2008 Proceedings, International Parallel and Distributed Processing Symposium (IPDPS)  
In this paper, we address this complexity issue and present a novel software-hardware hybrid steering mechanism for out-of-order processors.  ...  Experiments using SPEC CPU2000 benchmarks show that our hybrid approach can achieve almost the same performance as a state-of-the-art hardware-only steering scheme, while requiring low hardware complexity  ...  We would also like to thank Harish Patil of Intel for answering our PinPoint-related questions.  ... 
doi:10.1109/ipdps.2008.4536229 dblp:conf/ipps/CaiCGG08 fatcat:qvuaw254hrbtzlgjjfucti5suu

Large MIMO Systems: A Low-Complexity Detector at High Spectral Efficiencies

S. K. Mohammed, K. V. Vardhan, A. Chockalingam, B. S. Rajan
2008 2008 IEEE International Conference on Communications  
We present a low-complexity detector which achieves uncoded near-exponential diversity performance for hundreds of antennas in V-BLAST (i.e., achieves near SISO AWGN performance in a large MIMO fading  ...  With an outer turbo code, the proposed detector achieves good coded bit error performance as well.  ...  The MMSE-SIC detector has been shown to achieve optimal performance [3] . However, the order of per-bit complexity involved in MMSE-SIC and ZF-SIC detectors is cubic in number of antennas.  ... 
doi:10.1109/icc.2008.721 dblp:conf/icc/MohammedVCR08 fatcat:gtpm2suk4vgtreybdo5nhb6fga

Large MIMO Detection: A Low-Complexity Detector at High Spectral Efficiencies [article]

K. Vishnu Vardhan, Saif K. Mohammed, A. Chockalingam, B. Sundar Rajan
2008 arXiv   pre-print
In large MC-CDMA systems with hundreds of users, the proposed detector is shown to achieve near single-user performance at an average per-bit complexity linear in number of users, which is quite appealing  ...  We present a low-complexity detector which achieves uncoded near-exponential diversity performance for hundreds of antennas (i.e., achieves near SISO AWGN performance in a large MIMO fading environment  ...  As we pointed out in Fig. 3 , this 400 × 400 system performance is almost the same as that of a SISO AWGN channel where the SNR required to achieve 10 −3 BER is also close to 7 dB [22] , i.e., 20 log  ... 
arXiv:0804.0980v1 fatcat:i3sz7r6vebhqdlouxjeyaa2qna

Low-Complexity High-Order Propagator Method for Near-Field Source Localization

Jianzhong Li, Yide Wang, Cédric Le Bastard, Zongze Wu, Shaoyang Men
2018 Sensors  
Simulation results show that the proposed method achieves the same performance as the other high order statistics-based methods with a lower complexity.  ...  In this paper, an efficient high-order propagator method is proposed to localize near-field sources.  ...  Simulation results show the efficiency of the proposed method, which achieves a lower computational complexity than SHO, while performing almost as well as other high-order methods.  ... 
doi:10.3390/s19010054 fatcat:cf6fayi355bsphxv26633ki2k4

Selected basis for PAR reduction in multi-user downlink scenarios using lattice-reduction-aided precoding

Christian Siegl, Robert FH Fischer
2011 EURASIP Journal on Advances in Signal Processing  
In terms of PAR reduction performance, it turns out that sSLM outperforms SLS, whereas the performance of sSLM and SLB is similar.  ...  In order to reduce the PAR, we review the scheme selected sorting (SLS), which is a combined approach of PAR reduction and precoding with sTHP.  ...  Acknowledgements This work was supported in parts by Deutsche Forschungsgemeinschaft (DFG) within the frame-work TakeOFDM under grant FI 982/1-2.  ... 
doi:10.1186/1687-6180-2011-17 fatcat:vegchxbszbhutax6dxgl4dnnxq

Thinking Skills in Teaching Practices: Relationship with Students' Achievement in Mathematics
Когнитивные процессы в преподавании: связь с достижениями учащихся в математике

Galina Larina, National Research University Higher School of Economics, Anastasia Kapuza, National Research University Higher School of Economics
2020 Educational Studies Moscow  
Teaching practices of both types were found to be related positively to student achievement in mathematics.  ...  Data obtained in the longitudinal study Trajectories in Education and Careers conducted on a TIMSS-PISA sample is used to evaluate the presence of teaching practices that promote higher-and lower-order  ...  As a result, HO practices turned out to be positively related to students' mathematics achievements at the end of the tenth grade even if nine-grade performance was controlled for.  ... 
doi:10.17323/1814-9545-2020-1-70-96 fatcat:ii36i3n2wfg35av5tvir5rh6gm

Cross-Noise-Coupled Architecture of Complex Bandpass ΔΣAD Modulator

Hao SAN, Haruo KOBAYASHI
2009 IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences  
Complex bandpass ΔΣAD modulators can provide superior performance to a pair of real bandpass ΔΣAD modulators of the same order.  ...  This paper proposes a new architecture for complex bandpass ΔΣAD modulators with cross-noisecoupled topology, which effectively raises the order of the complex modulator and achieves higher SQNDR (Signal  ...  Acknowledgment A part of this work was performed at Gunma University Advanced Technology Research Center (ATEC) and Incubation Center.  ... 
doi:10.1587/transfun.e92.a.998 fatcat:uw2kehncafeulemam56ubqk3ty

A low-complexity issue logic

Ramon Canal, Antonio González
2000 Proceedings of the 14th international conference on Supercomputing - ICS '00  
The out-of-order scheme yields the best performance but at the same time introduces important hardware costs such as an associative look-up, which might be prohibitive for wide issue processors with large  ...  In this work, two new issue schemes that reduce the hardware complexity of the issue logic with minimal impact on the average number of instructions executed per cycle are presented.  ...  The research conducted in this paper has been developed using the resources of the CEPBA. The authors would like to thank Jim Smith for his comments on this work.  ... 
doi:10.1145/335231.335263 dblp:conf/ics/CanalG00 fatcat:56nxzdscyfeddemxhw5xgp7xoa

A CRC-Aided Hybrid Decoding Algorithm for Turbo Codes

Yuejun Wei, Ming Jiang, Bin Xia, Wen Chen, Yuhang Yang
2013 IEEE Wireless Communications Letters  
Simulation results show that with the proposed approach, 0.5-2dB performance gain can be achieved for the code blocks with short information length.  ...  The algorithm combines the iterative decoding with ordered statistics decoding (OSD), where the CRC code and the turbo code are regarded as an integrated whole in the OSD process.  ...  The order-k OSD process can achieve the MLD performance, but the computation complexity of 2 k is too high, which makes the order-k OSD impractical.  ... 
doi:10.1109/wcl.2013.052813.130259 fatcat:papex4zs7bavfakmte4hncdk2i

Usability of User Interfaces of Computer-Aided Industrial Design Systems

Alexander Nikov, Roumen Jijanov
2000 Proceedings of the Human Factors and Ergonomics Society Annual Meeting  
With increasing complexity in the design of the system, the interaction with a CAIDsystem becomes more complicated, the number of possibilities by which the designer can achieve a given goal increases,  ...  the work-task-related output increases, and the strain level required by the operators in order to achieve the result rises.  ...  With increasing complexity in the design of the system, the interaction with a CAIDsystem becomes more complicated, the number of possibilities by which the designer can achieve a given goal increases,  ... 
doi:10.1177/154193120004400220 fatcat:dcfn5jsqr5batnzlqojsxa5iqe

Layered Tabu Search Algorithm for Large-MIMO Detection and a Lower Bound on ML Performance

N. Srinidhi, Tanumay Datta, A. Chockalingam, B. Sundar Rajan
2011 IEEE Transactions on Communications  
In this letter, we are concerned with low-complexity detection in large multiple-input multiple-output (MIMO) systems with tens of transmit/receive antennas.  ...  The proposed detection algorithm based on the layered local neighborhood search achieves bit error performances which are quite close to this lower bound for large number of antennas and higher-order QAM  ...  Though the order of complexity for TS without layering is less, the constant is high; at = = 16 the proposed LTS with ordering has almost similar complexity as that of TS without layering.  ... 
doi:10.1109/tcomm.2011.070511.110058 fatcat:gy2wppdmsngnfmfubogko4gqmu

Norm-based user selection algorithm for single-RF space modulation techniques with geometric mean decomposition based precoding scheme

Taissir Y. Elganimi, Feras F. Alfitouri
2021 SN Applied Sciences  
The objective is to jointly perform the Frobenius norm-based user selection algorithm and design GMD-based precoded SMTs with single-RF chain in order to reduce the cost and the power consumption in multiple  ...  Furthermore, better error performance in MU-SMTs with fully digital GMD-based precoding technique is obtained by selecting any number of users.  ...  to achieve the same BER performance is almost 20 dB.  ... 
doi:10.1007/s42452-020-04068-0 fatcat:d44mpyqz65gmxnlgof4prqpce4
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