Sanjay Kumar

Birla Institute of Technology, Mesra | BIT Mesra · Department of Electronics and Communication Engineering

This work presents a reliable communication system tailored for post-disaster scenarios, where the existing terrestrial communication infrastructure is entirely disrupted by natural calamities. To encounter the situation, a Temporary Base Station (TBS) is deployed in the heart of the disaster-stricken area. However, due to the limited coverage area...

This manuscript proposes a novel, very general shadowed k-μ fading model for characterizing the realistic line-of-sight (LOS) propagation scenarios of 5G and beyond. In this model, statistics of the received signal are manifested by the clustering of multipath components. Within each of these clusters, shadowing of the dominant component is represe...

This work presents a novel system model consisting of an unmanned aerial vehicle (UAV) equipped with a half/full-duplex relay (HDR/FDR) operating as a near-user in the downlink non-orthogonal multiple access (NOMA) systems. In a disaster situation, there is no direct connectivity of the active base station (BS) to the far user due to the out-of-cov...

The study was conducted in Completely Randomized Design (CRD) with 5 treatments & four replications. The treatments were T1 (pineapple juice (700ml) + Beetroot extract (35gm) + 20° brix + Beetroot extract (35gm) wine yeast (0.133%), T2 (pineapple juice (700ml) + Beetroot extract (35gm) + 25° brix + wine yeast (0.133%), T3 (pineapple juice (700ml) +...

The moment generating function (MGF)‐based approach is found as more profound as compared with probability density function (PDF)‐based counterpart for error rate analysis in any communication system. However, it fails in the case of several modulation schemes with constellation size M, such as M‐PSK, M‐QAM, and M‐PAM schemes among the others, due...

The deployment of 5G (fifth generation mobile communication) network has already started. Although, 5G will offer significant improvements over the existing systems, but will not be able to fulfil the emerging future demands. Therefore, development of communication networks beyond 5G will be required, leading to 6G. 6G will satisfy unprecedented re...

This manuscript proposes novel and a very general shadowed k-μ fading model for charaterizing the realistic Line of Sight (LOS) propagation scenarios of 5G and beyond. In this model, the received signal is assumed to be composed of the clustering of multipath components. In each of these clusters, shadowing of the dominant component is represented...

Non-orthogonal multiple access (NOMA) is intended to be used for the next generation 5G cellular networks. In this paper, the expressions for the channel capacities for symmetric and asymmetric NOMA networks have been analysed. The performance measure of user spectral efficiency and the sum-rate bounds, for the NOMA and the existing orthogonal mult...

This work evaluates the sum rate performance for dual user with full duplex co-operative non-orthogonal multiple access (FD-CNOMA) over Weibull fading channel environment. For this, we derived closed form expressions for sum-rate in various scenario in downlink and uplink both. One user always acts as decode and forward full duplex relay to help fa...

The present invention pertains to modelling and mitigation of interference and it provides the counting distribution of the interferers under the given channel condition. The applicability of the invention range is not limited to a Microwave , a Millimeter wave (mm W), and a Tera Hz wave. Any of the receiver configured to detect interference by cou...

In the last decade, many fact-findings have been given on the performance analysis of composite fading channels in wireless communication. Various literatures have resented the performance analysis which includes shaping and severity factors of the multipath and shadowing simultaneously. But very limited amount of literature has included above fact...

Non-orthogonal multiple access (NOMA) is supposed to be used for forthcoming 5G cellular networks. In this paper, the expressions for the channel capacities for symmetric and asymmetric NOMA networks have been analyzed. The performance measure of user spectral efficiency and the sum-rate bounds, for the NOMAand the existing OMA networks have been c...

Molecular signaling is ubiquitous across scales in nature and finds useful applications in precision medicine and heavy industry. Characterizing noise in communication systems is essential to understanding its information capacity. To date, research in molecular nano communication (MNC) primarily considers the molecular dynamics within the medium,...

Commercial, multideployed cognitive femtocell base stations (CFBSs) with cognitive capabilities are envisioned as a promising approach to meet the requirement of the higher data rate in today's wireless communications with nomadic users. However, random deployment of CFBSs results in interference between primary links, ie, the link between a macroc...

Ever increasing need of data rate and coverage can be achieved by mitigating the impairments of wireless communication system. Inter cell interference (ICI) is one of the most challenging impairment of wireless communication. To mitigate ICI, multi cell cooperation (MCC) based technique has been proposed in literature. In this paper, ICI mitigation...

A newly emerging branch of communication system is nano communication (NC). The NC has enabled numerous important applications, such as immune system support, drug delivery systems, nuclear, biological and chemical defence and air pollution control. However, like in any communication system in NC system also, the medium through which communication...

The spectral efficiency results for different adaptive transmission schemes over correlated diversity branches with unequal average signal to noise ratio (SNR) obtained so far in literature are not applicable for Nakagami-0.5 fading channels. In this paper, we investigate the effect of fade correlation and level of imbalance in the branch average r...

Background/Objective: Software Defined Radio (SDR) is regarded as one of the most important emerging technologies. The aim of SDR is to support different wireless standards in a single radio device. Methods/Analysis: Different wireless standard requires different sample rate for baseband processing. This can be achieved by Sample Rate Conversion (S...

Rapid increase in the number of user per day has been observed in the field of wireless communication. This demands more and more data rate. Indoor deployment has been proposed as one of the solution to handle the challenge of the high rate. However, indoor scenario is prone to interference. Specifically, in femto-cell, both intra-tier and cross-ti...

Software Defined Radio (SDR) or Software Radio is one of the most important technologies for the modern wireless communication system. The vision of SDR is implementing a single radio that can emulate any radio signal of evolving or already existing wireless standards. It can be done simply by updating software without replacing the underlying hard...

Goal of next generation wireless communication system is to achieve very high data rate. Femto-cell is one of the possibilities to achieve the above target. However, Co-channel Interference (CCI) is the important concern in femto cell. This paper presents closed form expressions for Average Bit Error Rate (ABER) and capacity for different adaptive...

Software Defined Radio (SDR) supports different wireless standards in a single radio device. This can be done by digital signal processing. In digitized form different wireless standards requires different sample rates for baseband processing. Sample rate conversion (SRC) is required for this purpose. In SRC, Comb-Integrator-Comb (CIC) filter plays...

Software Defined Radio (SDR) is a radio device which can be tuned to any frequency band, implement different modulation and demodulation schemes and different wireless standards in the same device by using a reconfigurable hardware and powerful software, both of which can handle digital signals only. In SDR transceiver, Digital Front End (DFE) alon...

In this paper, closed-form expressions of Bit Error Rate (BER) for different modulation techniques such as BPSK, BFSK, DQPSK, BDPSK and MPSK over alpha-mu (α-μ) fading distribution are presented, followed by proposing a novel Moment Generating Function (MGF). Specifically, we have proposed 'A Novel MGF for Alpha-mu Fading Distribution'. The propose...

Software Defined Radio (SDR) or Software Radio is one of the most promising technologies for the mobile and wireless communications. SDR refers to a class of reprogrammable and reconfigurable radios. This paper describes the design of Wideband Low Noise Amplifier (LNA) for SDR receiver's RF Frontend. The proposed Wideband LNA exhibits very low nois...

Software Defined Radio (SDR) or Software Radio is one of the most important technologies for the modern wireless communication system. SDR is a radio which can tune to any frequency band, implement different modulation and demodulation schemes and different standards in the same device by using reconfigurable hardware and powerful software. SDR pro...

Software Defined Radio (SDR) can implement different wireless standards through software while using a static hardware platform. This can be possible by means of digital signal processing. So, in SDR receiver, received analog Radio Frequency (RF) signal is converted to digital signal by an Analog to Digital Converter (ADC) just after the receiving...

The results of spectral efficiencies for optimum rate adaptation with constant transmit power (ORA) and channel inversion with fixed rate (CIFR) schemes over uncorrelated diversity branch with Selection Combining (SC) available so far in literature are not applicable for Nakagami-0.5 fading channels. This paper derived closed-form expressions for t...

This paper provides Closed-form expressions for the average channel capacity and probability of outage of dual-branch Selection Combining (SC) over uncorrelated Nakagami-0.5 fading channels. This channel capacity and probability of outage are evaluated under Optimum Power with Rate Adaptation (OPRA) and Truncated Channel Inversion with Fixed Rate t...

The worst case fading scenario can be represented by Nakagami-0.5 distribution, which is a special case of Nakagami-m fading distribution. Under Nakagami-0.5 fading distribution closed-form expressions have been derived for the average channel capacity using uncorrelated dual-branch maximal ratio combining (MRC). This channel capacity is evaluated...