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علی الفت

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تاریخ به‌روزرسانی: 1405/07/01

علی الفت

دانشکده‌ مهندسی برق و کامپیوتر / گروه آموزشی مهندسی برق - مخابرات

مقالات علمی چاپ شده در مجلات

  1. "SQUID: Sparse Recovery-Based Efficient Detection for Signed Quadrature Spatial Modulation in Massive MIMO Systems"
    Setareh Dehghanfard, Mojtaba Amiri, Ali Olfat
    IET Communications, Vol. 20, No 1, pp.1-8, 2026
  2. "STAR-RIS–Assisted UAV Communications for Dynamic Spectrum Sharing in NOMA under Imperfect SIC: Enabling Cognitive Radio Networks"
    Ali Nazary, Ali Olfat
    IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, Vol. -, pp.1-18, 2026
  3. "Hybrid Beamforming for IRS Assisted Massive MIMO Systems"
    Mehrdad Momen tayefeh, Ali Olfat
    Transactions on Emerging Telecommunications Technologies, Vol. 37, No 4, pp.1-18, 2026
  4. "One-snapshot on-grid and off-grid channel estimation in uplink large-scale millimeter-wave MIMO using an exponential penalty function"
    Mohammadreza Nargesi, Ali Olfat
    SIGNAL PROCESSING, Vol. 239, pp.1-11, 2025
  5. "Joint Beamforming and Resource Allocation for STAR-IRS-Aided SCMA ISAC Systems Using Meta Deep Reinforcement Learning"
    Armin Farhadi, Ali Olfat, Christos Masouros
    IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, Vol. -, pp.1-16, 2025
  6. "Ergodic Capacity of Passive and Active IRS-Aided MIMO Systems"
    Hadi Gharibi, Amirmasoud Rabiei, Ali Olfat
    IEEE SENSORS JOURNAL, Vol. 25, No 10, pp.17283-17292, 2025
  7. "Optimizing hybrid beamforming in millimeter‐wave massive multiple‐input multiple‐output systems: A gradient projection approach"
    Mehrdad Momen tayefeh, Ali Olfat
    Transactions on Emerging Telecommunications Technologies, Vol. 35, No 8, pp.1-17, 2024
  8. "Wideband DOA estimation using modal orthogonality"
    Mostafa Parhizkar, Ali Olfat, Mojtaba Amiri
    TELECOMMUNICATION SYSTEMS, Vol. -, pp.1-11, 2024
  9. "Resource Allocation and BER Performance Analysis of NOMA Based Cooperative Networks"
    Ali Olfat
    TELECOMMUNICATION SYSTEMS, Vol. 83, No 2, 2023
  10. "Subspace Based DOA Estimation of DS-CDMA Signals"
    Amir Ghasemianlangroodi, Ali Olfat, Mojtaba Amiri
    TELECOMMUNICATION SYSTEMS, Vol. 12, No 14, pp.1-12, 2023
  11. "Performance analysis of subspace-based spatio-temporal spectral estimator"
    shervin Amirsoleimani, Ali Olfat
    Transactions on Emerging Telecommunications Technologies, Vol. 11, No 12, 2022
  12. "Cooperative Beamforming with Link-Adaptive Regenerative relays"
    Hesam Moharrer, Ali Olfat
    IET Communications, Vol. 14, No 16, pp.1-16, 2020
  13. "Wideband modal orthogonality: A New approach for broadband DOA estimation"
    shervin Amirsoleimani, Ali Olfat
    SIGNAL PROCESSING, Vol. 176, No 5, pp.1-11, 2020
  14. "Analogue beamforming solution for beamalignment problem"
    Mehdi Rastegari, Ali Olfat, Ebrahim Amini
    IET Communications, Vol. 14, No 16, pp.1-8, 2020
  15. "Joint beamforming and space-time coding in limited-feedback cooperative networks with threshold-based MIMO selection relaying"
    Mahsa Shirzadian Gilan, Ali Olfat
    Transactions on Emerging Telecommunications Technologies, Vol. 1, No 1, pp.1-14, 2019
  16. "Probability bounds of cross-layer interference in femtocell-underlay cellular networks employing interference alignment"
    Alireza Ghiamatyoun, Ali Olfat
    IET Communications, Vol. 13, No 16, pp.2590-2600, 2019
  17. "Single stage DOA-frequency representation of the array data with source reconstruction capability"
    shervin Amirsoleimani, Ali Olfat
    SIGNAL PROCESSING, Vol. 162, No 1, 2019
  18. "New beamforming and distributed space‐time coding with selection relaying over Nakagami‐m fading channels"
    Mahsa Shirzadian Gilan, Ali Olfat
    Transactions on Emerging Telecommunications Technologies, Vol. 29, No 12, pp.1-20, 2018
  19. "On the performance of space‐time coding and threshold‐based selection relaying in cooperative networks with multiple antenna relays"
    Mahsa Shirzadian Gilan, Ali Olfat
    Transactions on Emerging Telecommunications Technologies, Vol. 29, No 9, pp.1-20, 2018
  20. "New beamforming and space-time coding for two-path successive decode and forward relaying"
    Mahsa Shirzadian Gilan, Ali Olfat
    IET Communications, Vol. 12, No 13, pp.1573-1588, 2018
  21. "Bounds on achievable degrees of freedom in blind cellular networks"
    Alireza Ghiamatyoun, Ali Olfat
    IET Communications, Vol. 10, No 15, pp.2034-2042, 2016
  22. "Interwoven random unitary beamforming for MIMO broadcast channels"
    Ata Sattarzadeh, Ali Olfat
    Transactions on Emerging Telecommunications Technologies, Vol. 27, No 6, pp.798-813, 2016
  23. "New Beamforming and Relay Selection for Two-Way Decode-and-Forward Relay Networks"
    Alireza Sheikh, Ali Olfat
    IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, Vol. 65, No 3, pp.1354-1366, 2016
  24. "Soft-Limited Polarity-Coincidence-Array Spectrum Sensing in the Presence of Non-Gaussian Noise"
    Mohammad Karimzadeh, Amirmasoud Rabiei, Ali Olfat
    IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, Vol. PP, No 99, pp.1-10, 2016
  25. "Cooperative Beamforming for Two-Hop Multi-Relay Decode-and-Forward Networks"
    Hesam Moharrer, Ali Olfat, Norman C. Beaulieu
    IEEE TRANSACTIONS ON COMMUNICATIONS, Vol. 63, No 9, pp.3143-3156, 2015
  26. "Diversity achieving schemes for two-way multi-antenna relay networks in Nakagami-m fading"
    Alireza Sheikh, Ali Olfat
    IET Communications, Vol. 9, No 13, pp.1561-1574, 2015
  27. "Novel Beamforming Scheme for Multicasting in Cooperative Wireless Networks With a Multiple Antenna Relay"
    Mohammad Mohammadi Amiri, Ali Olfat, Norman C. Beaulieu
    IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, Vol. 14, No 8, pp.4482-4493, 2015
  28. "Downlink Interference Alignment in Two-Tier Femtocell Networks"
    Alireza Ghiamatyoun, Ali Olfat
    WIRELESS PERSONAL COMMUNICATIONS, Vol. 82, No 2, pp.777-798, 2014
  29. "Joint relay selection and cooperative beamforming in two-hop multi-relay decode-and-forward networks"
    Hesam Moharrer, Ali Olfat
    IET Communications, Vol. 8, No 18, pp.3245-3253, 2014
  30. "Outage Performance of Hybrid Decode–Amplify–Forward Protocol with the nth Best Relay Selection"
    Ehsan Olfat, Ali Olfat
    WIRELESS PERSONAL COMMUNICATIONS, Vol. 76, No 4, pp.1-9, 2014
  31. "Performance improvement of the PU2RC transmission schemes"
    Ata Sattarzadeh, Ali Olfat
    IET Communications, Vol. 8, No 6, pp.1-13, 2014
  32. "Subspace Smoothing for Direction of Arrival Estimation in DS-CDMA Systems"
    Maryam Abolfath-beygi, Ali Olfat
    WIRELESS PERSONAL COMMUNICATIONS, Vol. 74, No 2, pp.211-228, 2014
  33. "Pilot Symbol Parameter Optimization Based on Imperfect Channel State Prediction for OFDM Systems"
    Mahdi Karami, Ali Olfat, Norman C. Beaulieu
    IEEE TRANSACTIONS ON COMMUNICATIONS, Vol. 61, No 6, pp.2557-2567, 2013
  34. "Optimal Incremental Relaying in Cooperative Diversity Systems"
    Ali Habibi Bastami, Ali Olfat
    IET Communications, Vol. 7, No 2, pp.152-168, 2013
  35. "BER-Constrained Incremental Relaying with Relay Selection in Cooperative Wireless Networks"
    Ali Habibi Bastami, Ali Olfat
    WIRELESS PERSONAL COMMUNICATIONS, Vol. 72, No 1, pp.1-16, 2013
  36. "Periodic spectrum sensing parameters optimisation in cognitive radio networks"
    Borzoo Rassouli, Ali Olfat
    IET Communications, Vol. 6, No 18, pp.3329-3338, 2012
  37. "Bounds on the Throughput Performance of PU2RC and Its Application in Mode Switching"
    Ata Sattarzadeh , Ali Olfat
    IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, Vol. 61, No 2, pp.876-882, 2012
  38. "Performance of Hybrid Decode - Amplify - Forward Protocol for Multiple Relay Networks over Independent and Non - identical Flat Fading Channels"
    Ehsan Olfat , Ali Olfat
    IET Communications, Vol. 5, No 14, pp.2018-2027, 2011
  39. "Selection Relaying Schemes for Cooperative Wireless Networks with Adaptive Modulation"
    Ali Habibi Bastami, Ali Olfat
    IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, Vol. 60, No 4, pp.1358-1339, 2011
  40. "CFAR Detection for Multistatic Radar"
    Vahideh Amanipour , Ali Olfat
    SIGNAL PROCESSING, Vol. 91, No 1, pp.28-37, 2011
  41. "Subspace Based Direction of Arrival Estimation of DS - CDMA Signals Using Orthogonal Projection"
    Maryam Abolfath Beygi , Ali Olfat
    SIGNAL PROCESSING, Vol. 90, No 3, pp.932-926, 2010
  42. "Optimum Power and Rate Adaptation for MQAM in Rayleigh Flat Fading With Imperfect Channel Estimation"
    Ali Olfat, Mohammad Shikh Bahaei
    IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, Vol. 57, No 4, pp.2627-2622, 2008
  43. "New receiver for multiuser detection of CDMA signals with antenna arrays"
    Ali Olfat, Said Nader Esfahani
    IEE Proceedings, Vol. 151, No 2, pp.151-143, 2004
  44. "A New Signal Subspace Processing for DOA Estimation"
    Ali Olfat, Said Nader Esfahani
    SIGNAL PROCESSING, Vol. 84, No 4, pp.728-721, 2004
  45. "الگوریتم پرتودهی جدید برای شبکه های همیار با رله دیکد و ارسال چندآنتنه"
    محمد محمدی امیری، علی الفت
    نشریه مهندسی برق و مهندسی کامپیوتر ایران، نسخه 14، شماره 1، صفحات:67-72، 1395
  46. "بررسی احتمال خطای پروتکل دیکد- تقویت- ارسال با انتخاب بهترین و n-امین بهترین رله در شبکه های همیار با رله های موازی"
    احسان الفت، علی الفت
    نشریه مهندسی برق و مهندسی کامپیوتر ایران، نسخه 11، شماره 2، صفحات:1-6، 1394
  47. "آشکارسازی همزمان زیرکانال های همبسته OFDM برای سنجش طیف در شبکه های رادیوشناختگر"
    برزو رسولی، علی الفت
    نشریه مهندسی برق و مهندسی کامپیوتر ایران، نسخه 14، شماره 2، صفحات:1-6، 1391

مقالات علمی ارائه شده در همایش‌ها

  1. "Soft Decision Adaptive Deep Learning Detection for Enhanced Massive MIMO Performance"
    farnaz Sedaghati, Mojtaba Amiri, Ali Olfat
    2025 33rd International Conference on Electrical Engineering (ICEE), 2025
  2. "Low Complexity Single-Snapshot DOA Estimation Using Adaptive Filtering"
    Mojtaba Amiri, Mohammadreza Nargesi, Ali Olfat
    2025 33rd International Conference on Electrical Engineering (ICEE), 2025
  3. "High Performance Detector for Massive MIMO Systems Using an Adaptive Filtering Approach"
    Masoud Tahmasbi Fard, Mojtaba Amiri, Ali Olfat
    2024 32nd International Conference on Electrical Engineering (ICEE), 2024
  4. "Efficient signal detection via compressive sensing in uplink massive MIMO systems"
    Soroush Mesforush Mashhad, Mojtaba Amiri, Ali Olfat
    2024 32nd International Conference on Electrical Engineering (ICEE), 2024
  5. "Non-Orthogonal Variable Multi-Band Carrier-Less Amplitude and Phase Modulation with Reduced Subcarriers"
    Pooria Tabeshmehr, Ali Olfat, zabih Ghassemlooy, Stanislav Zvanovec
    West Asian Colloquium on Optical Wireless Communications (WACOWC), 2019
  6. "On the Performance of Distributed Space-Time Coding with Selection Relaying and Beamforming for Two-Path Successive Relay Network"
    Mahsa Shirzadian Gilan, Ali Olfat
    IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom), 2017
  7. "Sigmoid function detector in the Presence of heavy-tailed noise for multiple antenna cognitive radio networks"
    Mohammad Yavari, Ali Olfat
    IEEE International Conference on Communications (ICC-2017), 2017
  8. "Low complexity adaptive transmission scheme for cooperative networks with decode-and-forward relay"
    Mohammad Mohammadi Amiri, Ali Olfat
    International Symposium on Telecommunications, 2014
  9. "New beamforming method for two-way relay networks"
    Alireza Sheikh, Ali Olfat
    International Symposium on Telecommunications, 2014
  10. "Novel MMSE based DF filter and forward relaying strategy in frequency selective channels"
    Alireza Sheikh, Ali Olfat
    International Symposium on Telecommunications, 2014
  11. "Joint power and subcarrier allocation in OFDMA-based cooperative cognitive networks"
    Younes Hashemi, Ali Olfat
    Iranian Conference on Electrical Engineering, 2013
  12. "An efficient resource allocation scheme for OFDMA-based cooperative cognitive radio networks with minimum power constraint"
    Younes Hashemi, Ali Olfat
    International Symposium on Telecommunications, 2012
  13. "Periodic Spectrum Sensing Parameters Optimization in Cognitive Radio Networks"
    Borzoo Rassouli, Ali Olfat
    International Conference on Telacommunications (ICT 2012, 2012
  14. "Spectrum Sensing with Energy Detection under Fast and Slow Multipath Fading"
    Borzoo Rassouli, Ali Olfat
    International Conference on Telecommunications (ICT 2012, 2012
  15. "Bounds on Throughput performance of PU2RC"
    Ata Sattarzadeh, Ali Olfat
    IEEE International Symposium on Personal Indoor and Mobile Radio Communications, 2011