Masters Thesis in Information and Communication Engineering supervised by Daya Sagar Baral are:1.
IMPLEMENTATION OF TURBO CODE IN CDMA 2000 (2008)By: Damador Kandel Abstract: For the reliable communication, channel coding is employed.
The reason behind high data rate is based on use of digital modulation schemes like QPSK, 16QAM and 64QAM.
The modulation techniques may vary with the distance of subscriber's from the transmitting station to the mobile station as well as the noise in channel and MIMO technology with different matrix combination in uplink and downlink.
The reduction of the computational complexity of the ZF VBLAST receiver by reducing the number of iteration is considered.
The performance of various MIMO detectors is compared in terms of block error rate (BER).Low PAPR helps to minimize the inter-symbol interference and it is also good technical solution to save the power consumption of user's terminal while communication is in uplink mode.Multipath fading, white Channel performance is analyzed in terms of symbol error rate (SER) or bit error rate (BER) in different noise conditions in LTE channel. PERFORMANCE EVALUATION OF Wi MAX/IEEE 802.16 PHYSICAL LAYER (2010)By: Min Prasad Aryal Abstract: Wi MAX is an eminent technology that provides broadband and IP connectivity on "last mile" scenario.Turbo code as a powerful coding technique has been widely studied and used in communication system.Turbo code is implemented in forward link of CDMA 2000.For simulation Rayleigh channel model has been considered with BPSK (binary phase shift keying) modulation at transmitting end. PERFORMANCE EVALUATION OF 3GPP LONG TERM EVOLUTION (2010)By: Kamal Lamichhane Abstract: Uplink and downlink modulation techniques in long term evolution (LTE) are SCFDMA and OFDMA.SCFDMA has different subcarrier mapping techniques and hence SCFDMA can be analyzed under these different subcarrier mapping techniques.In the transmitter side, the signal is spreaded and in the receiver side, the signal is de spreaded to recover the original signal.Turbo code is analyzed in detail and comparison is between turbo code and convolution code is done. PAPR REDUCTION IN OFDM SYSTEM USING PULSE SHAPING TECHNIQUE (2008)By: Prakash Bahadur Shahi Abstract: Orthogonal-frequency-division-multiplexing (OFDM) technique allow the transmission of high data rates over broadband radio channels subject to multipath fading without the need for powerful channel equalization.MIMO system capacity is investigated using the Spatial Channel Model (SCM), proposed by standardization bodies (3GPP-3GPP2) for third generation systems and compared this to one of the physical geometrical model i.e., One Ring channel model and to a theoretical model i.e.independent and identically distributed (i.i.d.) model. Non line of sight (N-LOS) MIMO systems in SCM is evaluated with multipath propagation scenarios and compared with i.i.d and One-Ring channel model.