VOLUME-2 ISSUE -2013/I/C- PAPER-1
Balkiran kaur, Sanjiv Mishra, M.Shukla
Paper -ID- JEEERD_200133
Abstract-In wireless communications, fading is the major concern for researchers. Antenna diversity is one of the possible solution to overcome the effect of fading over wireless channels. Maximal ratio Receiver combining (MRRC) diversity is one of the possible solution to combat the effect of fading. Here in this paper, MRRC diversity scheme is used on Prime Interleaver with Zigzag coding. Zigzag code is a error- correcting code. Zigzag code is described by a highly structured zigzag graph. Due to the structural properties of Zigzag coding, very low-complexity soft-in/soft-out decoding rules can be implemented. In this paper, we are presenting MRRC in iterative IDMA system using Prime Interleaver with Zigzag coding with one transmit & two receiving antennas. In diversity mechanism, the number of antennas can be increased to improve BER.
Keywords-Bit Error Rate, MRRC scheme, Random Interleaver, Multiuser detection, Zigzag coding, Soft -in/soft-out.VOLUME-1 ISSUE -2013/I/C- PAPER-3
Shikha Verma
PAPER ID- JEEERD/2013-06/0017
Electronics & Communication Engg.
Shobhna Mishra, Shruti Awasthi, Sarika Singh, Omika Verma
PAPER ID- JEEERD/2013-06/0016
Electronics & Communication Engg.
Abstract — This paper addresses a movement-aware vertical (MAV) handover algorithm between WLAN and Mobile WiMAX for seamless ubiquitous access. An MAV handover algorithm is proposed in this paper to exploit movement pattern for avoiding unnecessary handovers in the integrated WLAN and Mobile WiMAX networks. If a mobile station (MS)’s velocity is high and its movement pattern is irregular, unnecessary handovers likely occur more
Frequently. Therefore, the MS velocity and moving pattern are important factors for the handover decision procedure. To
Avoid unnecessary handovers, the MAV handover algorithm adjusts the dwell time adaptively and predicts the residual
Time in the cell of target base station (BS). Consequently, the adaptive dwell timer of MAV handover algorithm allows an MS a better connection as long as possible. Our simulation results show that the reduction of unnecessary handovers by leads to significant throughput improvements.
Index Terms — Vertical Handover, Movement-Awareness, IEEE 802.11 WLAN, IEEE 802.16e Mobile WiMAX, Ubiquitous Computing.
Balkiran kaur, Sanjiv Mishra, M.Shukla
Paper -ID- JEEERD_200133
Abstract-In wireless communications, fading is the major concern for researchers. Antenna diversity is one of the possible solution to overcome the effect of fading over wireless channels. Maximal ratio Receiver combining (MRRC) diversity is one of the possible solution to combat the effect of fading. Here in this paper, MRRC diversity scheme is used on Prime Interleaver with Zigzag coding. Zigzag code is a error- correcting code. Zigzag code is described by a highly structured zigzag graph. Due to the structural properties of Zigzag coding, very low-complexity soft-in/soft-out decoding rules can be implemented. In this paper, we are presenting MRRC in iterative IDMA system using Prime Interleaver with Zigzag coding with one transmit & two receiving antennas. In diversity mechanism, the number of antennas can be increased to improve BER.
Keywords-Bit Error Rate, MRRC scheme, Random Interleaver, Multiuser detection, Zigzag coding, Soft -in/soft-out.VOLUME-1 ISSUE -2013/I/C- PAPER-3
Shikha Verma
PAPER ID- JEEERD/2013-06/0017
Electronics & Communication Engg.
Abstract—Communication
via diffusion of molecules is an effective method for transporting information
in nanonetworks. In this paper, novel
modulation techniques called Concentration Shift Keying (CSK) and Molecule
Shift Keying (MoSK) are proposed for coding and decoding information of the
so-called messenger molecule concentration waves in nanonetworks. The first
technique, CSK, modulates the information via the variation in the
concentration of the messenger molecules whereas MoSK utilizes different types
of messenger molecules to represent the information. Using simulation, the
performance of these modulation techniques is evaluated in terms of
susceptibility to noise and transmission power requirements. The new techniques
achieve high channel capacity values, in particular, the MoSK technique
exhibits more robustness against noise and requires less power.
Index Terms—nanonetworks,
communication via diffusion,
Molecular communication, modulation
techniques.Shobhna Mishra, Shruti Awasthi, Sarika Singh, Omika Verma
PAPER ID- JEEERD/2013-06/0016
Electronics & Communication Engg.
Abstract — This paper addresses a movement-aware vertical (MAV) handover algorithm between WLAN and Mobile WiMAX for seamless ubiquitous access. An MAV handover algorithm is proposed in this paper to exploit movement pattern for avoiding unnecessary handovers in the integrated WLAN and Mobile WiMAX networks. If a mobile station (MS)’s velocity is high and its movement pattern is irregular, unnecessary handovers likely occur more
Frequently. Therefore, the MS velocity and moving pattern are important factors for the handover decision procedure. To
Avoid unnecessary handovers, the MAV handover algorithm adjusts the dwell time adaptively and predicts the residual
Time in the cell of target base station (BS). Consequently, the adaptive dwell timer of MAV handover algorithm allows an MS a better connection as long as possible. Our simulation results show that the reduction of unnecessary handovers by leads to significant throughput improvements.
Index Terms — Vertical Handover, Movement-Awareness, IEEE 802.11 WLAN, IEEE 802.16e Mobile WiMAX, Ubiquitous Computing.