Rama Krishna Surabattuni

Experienced installation and repair technician with work history setting up, repairing and configuring telecommunications equipment and ERP Software Application.

Project Title: Secured Communication in SWIPT Networks (Aug 2016 to May 2017)

It was my final year these work and worked under Associate Professor Derrick Wing Kwan Ng. This proposed research aims to mitigate the Information leakage problem by using the convex optimization methods. Semi Definite Programming (SDP), Karush–Kuhn–Tucker (KKT) conditions, Lagrangian dual Problem, and one-dimensional search introduced for solving the proposed problem. Secrecy rate calculated for different number of transmitting antennas for given power. Finally, we compared the our optimal scheme with the baseline scheme.

Project Title: 5G Non-Orthogonal Multiple Access (NOMA) Systems (June 2016 to Aug 2016)

Non-Orthogonal Multiple Access (NOMA) has been recognized as a promising candidate for the fifth generation (5G) of communication systems. Different from the conventional OMA schemes, NOMA multiplexes multiple users on each subcarrier which achieves better performances on power efficiency and user fairness than conventional OMA. Based on the NOMA concepts, we propose 3 schemes of user pairing depending on different criteria. In this report, the performances of the OMA system and all the 3 proposed schemes are analysed by both simulation and analytical approaches. Particularly, the results of different pairing criteria, different pairing orders, and different power allocations are simulated to optimize the performance of NOMA. To verify the optimized performance of the new scheme, some analytical results are included as well

Project Title: MIMO Transmission Using the Channel State Information at the Transmitter (Aug 2015 to Sep 2015)

This work analytical expressions for the capacity of single-user multi-antenna channels, known instantaneously by both transmitter and receiver, at moderate and high signal-to-noise ratios. Fading channels with both uncorrelated and correlated antennas are encompassed. The characterization is conducted primarily in the limit of large numbers of antennas, with accompanying examples that illustrate the validity of the results for even small numbers thereof. In the absence of correlation, the capacity is also tightly bounded for fixed numbers of antennas with compact closed-form expressions