Mohsin Khan | University of Lahore, Lahore Pakistan (original) (raw)

Papers by Mohsin Khan

Research paper thumbnail of Comparative Analysis of five Sorting Algorithms on the basis of Best Case, Average Case, and Worst Case

Sorting is one of the fundamental issues in computer science. Sorting problem gain more popularit... more Sorting is one of the fundamental issues in computer science. Sorting problem gain more popularity, as efficient sorting is more important to optimize other algorithms e.g. searching algorithms. A number of sorting algorithms has been proposed with different constraints e.g. number of iterations (inner loop, outer loop), complexity, and CPU consuming problem. This paper presents a comparison of different sorting algorithms (Sort, Optimized Sort, Selection Sort, Quick Sort, and Merge Sort) with different data sets (small data, medium data, and large data), with Best Case, Average Case, and worst case constraint. All six algorithms are analyzed, implemented, tested, compared and concluded that which algorithm is best for small, average, and large data sets, with all three constraints (best case, average case, and worst case).

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The Notion of Duality in Fully Intuitionistic Fuzzy Linear Programming (FIFLP) Problems

—This study is devoted to address the notion of duality in Fully Intuitionistic Fuzzy Linear Prog... more —This study is devoted to address the notion of duality in Fully Intuitionistic Fuzzy Linear Programming Problems (FIFLP). The problem is addressed by using a revised simplex method with the Gaussian elimination process in fully intuitionistic fuzzy environment. Intuitionistic Fuzzy Trapezoidal Numbers (IFTrpN), along with the basic arithmetic techniques defined on them help in solving the (FIFLP's). Moreover, a modified ranking function makes comparisons among intuitionistic fuzzy numbers and identifies the location of next iteration of the revised simplex method. Keywords— Intuitionistic Fuzzy Linear Programming Problems (IFLP), Intuitionistic Fuzzy Simplex Method, Ranking and Selection

Bookmarks Related papers MentionsView impact

Research paper thumbnail of A NEW HYBRID PRE-CODING BASED INTERLEAVED ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS (IOFDMA) SYSTEM FOR VEHICULAR AD-HOC NETWORK

—The OFDMA has been used by researchers as a modulation technique, for next generation networks, ... more —The OFDMA has been used by researchers as a modulation technique, for next generation networks, due to its robust against inter symbol, inter carrier interferences. Moreover, it also provides best quality of service for multiple users, efficient usage of bandwidth. However, a high peak to average power ratio and Bit Error Rate (BER) are some of its disadvantages, using the downlink of 4G networks. Therefore, a new hybrid pre-coding based interleaved OFDMA model, combined with SLM technique, has been proposed. The proposed model has shown better PAPR performance, as compared to the previous proposed pre-coding based IOFDMA, and conventional IOFDMA system models. Moreover, improved BER performance is shown, as compared to that of conventional IOFDMA systems. The derived DST matrix has shown lower complexity, as compared to previous proposed WHT matrix. The proposed model is bandwidth efficient, and minimizes the PAPR without using any error control codes, and causes extra transmission of code information. The proposed technique does not require any complex optimizations, power increase, and side information, and demonstrated efficient BER performance gain in multipath fading channels.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of A Review of Pre-Coding Based System to Reduce PAPR in OFDMA

– OFDMA is promising technique for new high speed wireless data networks. It provides high speed ... more – OFDMA is promising technique for new high speed wireless data networks. It provides high speed data transfer with high spectral efficiency and noise immunity for in band and out band spectrum. Multiple slow speed data streams can be transmitted simultaneously. But the main problem associated with this type of networks is PAPR. PAPR occurs due to limited linear operation of high frequency power amplifier. This drawback is so severe that all the advantages of OFDMA become unattractive. However this problem can be overcome by pre-coding technique that is presented in this paper and the fruits of OFDMA can be enjoyed. Keywords– Walsh-Hadamard Transform (WHT), Discrete Hartley Transformation (DHT), Zadoff-Chu Transformation (ZCT), Discrete Fourier Transformation (DFT) and Bit Error Rate (BER)

Bookmarks Related papers MentionsView impact

Research paper thumbnail of A Survey Paper on: Performance Evaluation of Symmetric Cryptography Algorithms

Network and Internet applications are growing very fast, since the need to secure these applicati... more Network and Internet applications are growing very fast, since the need to secure these applications are very fast. For this purpose cryptography algorithms (symmetric & Asymmetric) are proposed. These algorithms consume a significant amount of computing resources like CPU processing time, Memory, Battery power, and throughput. The performances of cryptography algorithms are different in different environments. Different cryptography algorithm faced different issues like battery consumption, CPU Processing Speed, and Memory according to their Algorithm and key generation process. Here in this survey paper we discuss about the symmetric cryptographic algorithms and their performance in context of power consumption issues, Memory and CPU processing time.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of A REVIEW PAPER ON: THE PAPR ANALYSIS OF ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM

OFDM (Orthogonal Frequency Division Multiplexing) has been raised a new modulation technique. Due... more OFDM (Orthogonal Frequency Division Multiplexing) has been raised a new modulation technique. Due to its advantages in multipath fading channel e.g. robust against ISI, ICI and some other advantages like best QoS for multiple users, efficient usage of bandwidth it is suggested to be the modulation technique for next generation 4G networks e.g. LTE. But along with all its advantages there are some disadvantages also e.g. High PAPR (Peak to Average Power Ratio) at the transmitter end and BER (Bit Error Rate) at the receiving end. Since OFDM is only used in the downlink of 4G networks. To reduce the problems of OFDM some techniques e.g. SLM, PTS, Clipping, Coding, & Pre-coding etc are suggested but none of them is reduce the PAPR and BER to an acceptable value. This Paper will discuss some techniques of PAPR & BER reduction, and their advantages and disadvantages in detail.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Comparative Analysis of five Sorting Algorithms on the basis of Best Case, Average Case, and Worst Case

Sorting is one of the fundamental issues in computer science. Sorting problem gain more popularit... more Sorting is one of the fundamental issues in computer science. Sorting problem gain more popularity, as efficient sorting is more important to optimize other algorithms e.g. searching algorithms. A number of sorting algorithms has been proposed with different constraints e.g. number of iterations (inner loop, outer loop), complexity, and CPU consuming problem. This paper presents a comparison of different sorting algorithms (Sort, Optimized Sort, Selection Sort, Quick Sort, and Merge Sort) with different data sets (small data, medium data, and large data), with Best Case, Average Case, and worst case constraint. All six algorithms are analyzed, implemented, tested, compared and concluded that which algorithm is best for small, average, and large data sets, with all three constraints (best case, average case, and worst case).

Bookmarks Related papers MentionsView impact

Research paper thumbnail of The Notion of Duality in Fully Intuitionistic Fuzzy Linear Programming (FIFLP) Problems

—This study is devoted to address the notion of duality in Fully Intuitionistic Fuzzy Linear Prog... more —This study is devoted to address the notion of duality in Fully Intuitionistic Fuzzy Linear Programming Problems (FIFLP). The problem is addressed by using a revised simplex method with the Gaussian elimination process in fully intuitionistic fuzzy environment. Intuitionistic Fuzzy Trapezoidal Numbers (IFTrpN), along with the basic arithmetic techniques defined on them help in solving the (FIFLP's). Moreover, a modified ranking function makes comparisons among intuitionistic fuzzy numbers and identifies the location of next iteration of the revised simplex method. Keywords— Intuitionistic Fuzzy Linear Programming Problems (IFLP), Intuitionistic Fuzzy Simplex Method, Ranking and Selection

Bookmarks Related papers MentionsView impact

Research paper thumbnail of A NEW HYBRID PRE-CODING BASED INTERLEAVED ORTHOGONAL FREQUENCY DIVISION MULTIPLE ACCESS (IOFDMA) SYSTEM FOR VEHICULAR AD-HOC NETWORK

—The OFDMA has been used by researchers as a modulation technique, for next generation networks, ... more —The OFDMA has been used by researchers as a modulation technique, for next generation networks, due to its robust against inter symbol, inter carrier interferences. Moreover, it also provides best quality of service for multiple users, efficient usage of bandwidth. However, a high peak to average power ratio and Bit Error Rate (BER) are some of its disadvantages, using the downlink of 4G networks. Therefore, a new hybrid pre-coding based interleaved OFDMA model, combined with SLM technique, has been proposed. The proposed model has shown better PAPR performance, as compared to the previous proposed pre-coding based IOFDMA, and conventional IOFDMA system models. Moreover, improved BER performance is shown, as compared to that of conventional IOFDMA systems. The derived DST matrix has shown lower complexity, as compared to previous proposed WHT matrix. The proposed model is bandwidth efficient, and minimizes the PAPR without using any error control codes, and causes extra transmission of code information. The proposed technique does not require any complex optimizations, power increase, and side information, and demonstrated efficient BER performance gain in multipath fading channels.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of A Review of Pre-Coding Based System to Reduce PAPR in OFDMA

– OFDMA is promising technique for new high speed wireless data networks. It provides high speed ... more – OFDMA is promising technique for new high speed wireless data networks. It provides high speed data transfer with high spectral efficiency and noise immunity for in band and out band spectrum. Multiple slow speed data streams can be transmitted simultaneously. But the main problem associated with this type of networks is PAPR. PAPR occurs due to limited linear operation of high frequency power amplifier. This drawback is so severe that all the advantages of OFDMA become unattractive. However this problem can be overcome by pre-coding technique that is presented in this paper and the fruits of OFDMA can be enjoyed. Keywords– Walsh-Hadamard Transform (WHT), Discrete Hartley Transformation (DHT), Zadoff-Chu Transformation (ZCT), Discrete Fourier Transformation (DFT) and Bit Error Rate (BER)

Bookmarks Related papers MentionsView impact

Research paper thumbnail of A Survey Paper on: Performance Evaluation of Symmetric Cryptography Algorithms

Network and Internet applications are growing very fast, since the need to secure these applicati... more Network and Internet applications are growing very fast, since the need to secure these applications are very fast. For this purpose cryptography algorithms (symmetric & Asymmetric) are proposed. These algorithms consume a significant amount of computing resources like CPU processing time, Memory, Battery power, and throughput. The performances of cryptography algorithms are different in different environments. Different cryptography algorithm faced different issues like battery consumption, CPU Processing Speed, and Memory according to their Algorithm and key generation process. Here in this survey paper we discuss about the symmetric cryptographic algorithms and their performance in context of power consumption issues, Memory and CPU processing time.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of A REVIEW PAPER ON: THE PAPR ANALYSIS OF ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM

OFDM (Orthogonal Frequency Division Multiplexing) has been raised a new modulation technique. Due... more OFDM (Orthogonal Frequency Division Multiplexing) has been raised a new modulation technique. Due to its advantages in multipath fading channel e.g. robust against ISI, ICI and some other advantages like best QoS for multiple users, efficient usage of bandwidth it is suggested to be the modulation technique for next generation 4G networks e.g. LTE. But along with all its advantages there are some disadvantages also e.g. High PAPR (Peak to Average Power Ratio) at the transmitter end and BER (Bit Error Rate) at the receiving end. Since OFDM is only used in the downlink of 4G networks. To reduce the problems of OFDM some techniques e.g. SLM, PTS, Clipping, Coding, & Pre-coding etc are suggested but none of them is reduce the PAPR and BER to an acceptable value. This Paper will discuss some techniques of PAPR & BER reduction, and their advantages and disadvantages in detail.

Bookmarks Related papers MentionsView impact