Dr Yi Ma
Lecturer in Cognitive Communications
Qualifications: PhD, SMIEEE
Email: y.ma@surrey.ac.uk
Phone: Work: 01483 68 3609
Room no: 40 BA 01
Office hours
| UG/PGT Time: | Year 1: 12:00 - 13:00, Friday Year 2: 12:00 - 13:00, Monday Others: 14:00 - 15:00, Friday |
| PhD Time: | Every working day |
Further information
Biography
Dr. Yi Ma received his Ph.D. degree in electrical engineering and electronics from The University of Liverpool. He is currently a lecturer within the Centre for Communication Systems Research (CCSR). He has extensive expertise in signal processing and information theory with applications in wireless communications.
Dr. Ma's current research interest is: optimum transceivers for cross-talk over wireless medium. Moreover, he is currently involved in Graduate Certificate of Learning and Teaching (GCLT) taking the research project Mathematical Theory of Social Learning Networks.
Research Interests
| Current Research Topic | Researcher |
| Applied Information Theory | |
| MIMO Interference Channel | Mr. Jiancao Hou |
| Cognitive Interference channel | Mr. Hans E.Yngvesson |
| Wireless Communications | |
| Cognitive Relaying | Mr. Chuyi Qian |
| HARQ for M2M | Dr. Hong Chen |
| Signal Processing for Communications | |
| Spectrum Sensing | Mr. Zhengwei Lu |
| Optimal Transceiver Design | Mr. Guangyi Wang |
| Radio Localization Technique | |
| On-line radio map construction | Mr. Abdullah Alazoni |
| All the above & others | Dr. Yi Ma |
Ex-PhD Students:
| Name | What They Said During Their PhD |
| Dr. Hongju Liu (04-08) | Modelling mismatch is more crucial than noise when considering optimal pilot placement for uplink communications. |
| Dr. Na Yi (06-09) | Cooperation is not relaying but has a wider sense in wireless networks. |
| Dr. Yuanyuan Zhang (06-10) | Why should not a relay use modulation format different from the source. |
| Dr. Mohammad Movahhedian (07-10) | Time domain correlation can mitigate multiuser interference. |
| Dr. Parisa Cheraghi (09-12) | Communication signals show different frequency-domain order-statistics from the AWGN. This interesting physical nature can be exploited to offer highly accurate spectrum sensing in low SNRs. |
| Dr. Ziming He (07-12) | Providing accurate heading information enables highly accurate WLAN-based indoor positioning. |
Research Collaborations
Current Collaborations:
LTE Machine 2 Machine Communications (SONY-Europe)
WHERE2 (FP7 ICT Consortium)
EXALTED (FP7 ICT Consortium)
Publications
I have authored and co-authored more than 80 peer reviewed journal and conference papers in the areas of signal processing, wireless communications and localization. Below are some selected papers for your interest (still in updating progress)
Statistical Signal Processing
Cheraghi, P., Ma, Y., Z. Lu, Tafazolli, R., Cluster-Based Differential Energy Detection for Spectrum Sensing in Multi-Carrier Systems, IEEE Trans. Signal Process., vol. 60, no. 12, Dec. 2012, pp. 6450 - 6464.
Movahhedian, M., Ma, Y., Tafazolli, R., Blind CFO Estimation for Linearly Precoded OFDMA Uplink, IEEE Trans. Signal Process., vol. 58, no. 9, Sept. 2010, pp. 4698 - 4710.
Y. Ma, R. Tafazolli, Estimation of Carrier Frequency Offset for Multicarrier CDMA Uplink, IEEE Trans. Signal Process., vol. 55, No. 6, June 2007, pp. 2617 - 2627.
Y. Ma and R. Tafazolli, Estimation of carrier frequency offset for generalized MC-CDMA systems by exploiting hidden pilots, IEEE Signal Process. Letts, vol. 12, Nov. 2005.
Wireless Communications
Y. Ma, N. Yi, R. Tafazolli, Bit and Power Loading for OFDM-Based Three-Node Relaying Communications, IEEE Trans. Signal Process., vol. 56, No. 7, July 2008, pp. 3236 - 3247.
Y. Ma, R. Tafazolli, Y. Zhang, C. Qian, Adaptive Modulation for Opportunistic Decode-and-Forward Relaying, IEEE Trans. Wireless Commun., vol. 10, No. 7, July 2011, pp. 2017 - 2022.
Y. Ma, R. Tafazolli, Channel Estimation for OFDMA Uplink: a hybrid of linear and BEM interpolation approach, IEEE Trans. Signal Process., vol. 55, No. 4, Apr., 2007.
Z. Lu, Y. Ma, R. Tafazolli, P. Cheraghi, Novel pilot-assisted spectrum sensing for OFDM systems by exploiting statistical difference between subcarriers, IEEE Trans. Commun., 2013 [Available IEEEXplore Online]
Y. Zhang, Y. Ma, R. Tafazolli, Power allocation for bidirectional AF relaying over Rayleigh fading channels, IEEE Commun. Letts, vol. 14, Feb. 2010.
Y. Ma, N. Yi, and R.Tafazolli, Channel estimation for PRP-OFDM in slowly time-varying channel: first-order or second-order statistics? IEEE Signal Process. Letts, vol. 13, March 2006.
N. Yi, Y. Ma, and R. Tafazolli, Underlay cognitive radio with full or partial channel quality information, Int. J. Nav. and Obs., 2010.
Mobile Localization
Z. He, Y. Ma, R. Tafazolli, Posterior Cramer-Rao bound for inertial sensors enhanced mobile positioning under the random walk motion model,IEEE Wireless Commun. Letts., vol. 1, Dec. 2012.
Z. He, A. Alonazi, Y. Ma, Rahim Tafazolli, A cooperative positioning algorithm in cellular networks with hearability problem, IEEE Wireless Commun. Letts, vol. 2, Feb. 2013.
Z. He, Y. Ma, Rahim Tafazolli, Improved high resolution TOA estimation for OFDM-WLAN based indoor ranging, IEEE Wireless Commun. Letts, vol. 2, April 2013.
Teaching
- Mobile and Personal Communications A
- L2 EE Lab
- UG/PGT Personal Tutor
PhD Position
I am constantly looking for good PhD candidates with excellent background in Physics, Mathematics, Wireless Communications, or Computer Science. The essential requirements for an application to be considered are:
1. First class UG degree or MSc with a Distinction (or equivalent to top 10% internationally)
2. A good research proposal, which should clearly indicate why the proposed research should be funded by the CCSR.
3. For international students, it is essential to meet the University's English requirement (e.g. IELTS Avr. 6.5 or above with each section to be 6.0 or above).
