Refine your search
Collections
Journals
Year
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Singh, Maninder
- Performance Analysis of WiMax on the Basis of BER Using Simulink
Abstract Views :146 |
PDF Views:3
Authors
Affiliations
1 Electronics & Communication Engineering, Maharishi Markandeshwar University, Mullana, Ambala, Haryana, IN
2 Department of Electronics and Communication Engineering, Haryana Engineering College, Jagadhri, Haryana, IN
3 Department of Electronics & Communication Engineering, Maharishi Markandeshwar University, Mullana, Ambala, Haryana, IN
1 Electronics & Communication Engineering, Maharishi Markandeshwar University, Mullana, Ambala, Haryana, IN
2 Department of Electronics and Communication Engineering, Haryana Engineering College, Jagadhri, Haryana, IN
3 Department of Electronics & Communication Engineering, Maharishi Markandeshwar University, Mullana, Ambala, Haryana, IN
Source
Wireless Communication, Vol 3, No 7 (2011), Pagination: 525-528Abstract
Worldwide Interoperability for Microwave Access (WiMAX) is one of the most developing technology in modern wireless communication system for providing voice, data, video and multimedia services on mobile phones at high speeds, cheap rate & unwired transmission. The physical layer of WiMax emphasis on Orthogonal Frequency Division Multiplexing (OFDM) signals. OFDM is a parallel transmission scheme, where a high – rate serial data stream is split up into a set of low – rate sub streams, each of which is modulated on a separate subcarrier. Increasing the number of parallel transmission reduces the data rate that each individual carrier must convey and that lengthens the symbol period. However, in OFDM, no frequency diversity is exploited to improve Bit Error Rate (BER) performance. Today’s OFDM systems attempt to overcome this limitation by application of channel coding and interleaving, which requires a reduction in throughput. OFDM uses different type of modulation and encoding schemes to improve BER performance. In this paper we study WiMax with OFDM transmission system and compared WiMax system by using different modulation schemes such as QAM and QPSK modulation and encoding schemes such as CRC and RS encoding schemes over multi-path fading channels at the cost of small increase in complexity.Keywords
CRC Encoding, OFDM, RS Encoding, Wimax.- Reduction in Bit Error Rate of CDMA System by using Different Interleaving and Encoding Schemes
Abstract Views :176 |
PDF Views:3
Authors
Affiliations
1 Department of EEE, H.C.T.M., Kaithal, IN
2 Department of ECE, MMU, Mullana, IN
1 Department of EEE, H.C.T.M., Kaithal, IN
2 Department of ECE, MMU, Mullana, IN
Source
Wireless Communication, Vol 3, No 1 (2011), Pagination: 11-15Abstract
CDMA (code division multiple access) is one of the most developing technology in modern mobile communication. It has gained widespread international acceptance by cellular radio system operators as an upgrade that will dramatically increase both their system capacity and the service quality. The core principle of spread spectrum is the use of noise-like carrier waves, and, as the name implies, bandwidths much wider than that required for simple point-to-point communication at the same data rate. Most third generation mobile communication systems are using CDMA as their modulation technique. In CDMA interleaving is used for multiplexing of several input data over shared media. In CDMA system different type of interleaving schemes are used. In this paper we analyze the performance of these interleaving schemes in multipath fading and additive white Gaussian noise (AWGN) channels. We conclude that a different interleaving scheme has different data rates and bit error rate.Keywords
CDMA, System Model of CDMA, Interleaving, BER.- Reduction of Bit Error Rate in Ultra-Wide Band System Using Simulink
Abstract Views :145 |
PDF Views:4
Authors
Affiliations
1 Department of Electronics and Communication Engineering, Haryana Engineering College, Jagadhri, Haryana, IN
2 Department of Electronics and Communication Engineering, M. M. University, Mullana, Haryana, IN
1 Department of Electronics and Communication Engineering, Haryana Engineering College, Jagadhri, Haryana, IN
2 Department of Electronics and Communication Engineering, M. M. University, Mullana, Haryana, IN