Essays about: "performance QAM"
Showing result 11 - 15 of 20 essays containing the words performance QAM.
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11. PERFORMANCE ENHANCEMENT OF OFDM IN PAPR REDUCTION USING NEW COMPANDING TRANSFORM AND ADAPTIVE AC EXTENSION ALGORITHM FOR NEXT GENERATION NETWORKSPERFORMANCE ENHANCEMENT OF OFDM IN PAPR REDUCTION USING NEW COMPANDING TRANSFORM AND ADAPTIVE AC EXTENSION ALGORITHM FOR NEXT GENERATION NETWORKS
University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskapAbstract : This paper presents a new hybrid PAPR reduction technique for the OFDM signal, which combines a multiple symbol representations method with a signal clipping method. The clipping method is a nonlinear PAPR reduction scheme, where the amplitude of the signal is limited to a given threshold. READ MORE
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12. QAM and PSK Modulation Schemes under Impulsive Noise
University essay from Avdelningen för elektronik, matematik och naturvetenskapAbstract : Nowadays most of the communications systems are designed considering only to work under AWGN (Additive White Gaussian Noise). But the implementation of wireless systems in industrial facilities brings different kind of interference from machines or any other kind of electronic devices. READ MORE
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13. Efficient Modelling and Performance Analysis of Wideband Communication Receivers
University essay from Signaler och SystemAbstract : This thesis deals with Symbol Error Rate (SER)-simulation of wireless communications and its application into throughput analysis of UltraWideband (UWB) systems. The SERs will be simulated in C++ using the Monte Carlo method and when some are calculated, the rest will be estimated using a novel extrapolation method. READ MORE
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14. The Performance Evaluation of OFDM Based WLAN (IEEE 802.11a and 802.11g)
University essay from Blekinge Tekniska Högskola/Sektionen för datavetenskap och kommunikationAbstract : ABSTRACT In the past decade there has been a steady growth in development and implementation of wireless Local Area Networks and emerged as in the largest sectors of the telecommunication industry. Wireless local area network (WLANs) provides connectivity, mobility, and much higher performance and achievable data rate. READ MORE
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15. Low Complexity Channel Estimation for OFDM Systems Based on LS and MMSE Estimators’
University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskapAbstract : In this paper we investigate the block-type pilot channel estimation for orthogonal frequency-division multiplexing (OFDM) systems. The estimation is based on the minimum mean square error (MMSE) estimator and the least square (LS) estimator. We derive the MMSE and LS estimators’ architecture and investigate their performances. READ MORE