QPSK/QAM
Comparative Analysis of DP QPSK and DP 16 QAM Optical Coherent Receiver, with Taking in View the Best Analyses of the Phase Noise in terms of Average BER using Digital Filters
... Comparative analysis of DP QPSK and DP 16-QAM has been done in terms of power spectrum. The DP 16-QAM giving the best result in terms of power spectrum with the transmitted power confined at the ...
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SCFDE System Using Linear Equalizers for MIMO SystemWith BPSK, QPSK and QAM
... BPSK, QPSK and 16 QAM modulations for AlamoutiZF and MMSE equalizer with rate 3, 6, ...BPSK, QPSK, 16 QAM and Alamouti scheme with linear equalizers for rate 3, 6, ...BPSK, QPSK, 16 ...
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SIGNAL TO NOISE RATIO ESTIMATION OF QAM AND QPSK MODULATION TECHNIQUE AT 910MHz and 2116 4 MHz USING MEASURED DATA
... and QPSK) are considered in W-CDMA environment, as we increase the range of communication, we step down to lower modulation (QPSK) but as we reduce the communication range means we are closer to the base ...
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BER Analysis of Mobile WiMAX System Using STBC Code in MIMO System under AWGN and Other Channels
... Hadj Zerrouki & Mohamed Feham in 2010[13] published that IEEE 802.16e -2004 currently supports several multiple- antenna options including Space-Time codes (STC) Multiple-Input Multiple-Output (MIMO) antenna systems ...
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The International Journal of Innovative Research in Science & Engineering (IJIRSE)
... This OFDM interconnected technique has been familiarized terminated 40 years ago. This technique has stayed chosen for various current and future communication systems all over the world in many applications. In this ...
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Adaptive Modulation and Coding for Multi Hop Network
... Performance measure like packet delivery ratio, throughput, delay and number of packets dropped is carried out for four different modulations like BPSK, QPSK, 16-QAM and 64- QAM. By the result it is ...
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Performance of IEEE 802.16e MIMO-OFDM System with Alamouti Scheme.
... BPSK, QPSK, 8-QAM and 16-QAM with mobile wireless channel AWGN used and the results shows under the bit error rate versus signal to noise ratio ...
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Adaptive Modulation Techniques for Duplex OFDM Transmission
... Adaptive modulation can reduce the BER to a level, where channel decoders can perform well. Fig. 12 shows both the un- coded and coded BER performance of a 512 subcarrier OFDM modem in the fading wideband channel of Fig. ...
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Comparison of LMS and FDAF Algorithms in Equalization of Fading Channel
... The paper is organized as follows. Section II gives the theoretical analysis of the adaptive equalizer and adaptive algorithm (LMS and FDAF), section III gives the results where constellation diagram of received symbols ...
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Large-System Analysis of Correlated MIMO Multiple Access Channels with Arbitrary Signaling in the Presence of Interference
... The aforementioned studies regarding MIMO systems with co-channel interference have all concentrated on the special case, where Gaussian signals are transmitted both by the desired user and the interfering terminals. ...
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Maximum Likelihood Equalisation for STBC MIMO on Test Bed
... We have analyzed the bit error rate and symbol error rate performance of STBC-MIMO system with transmitter diversity for different modulation techniques e.g QPSK , 4-QAM,16- PSK and 16-QAM. The ...
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A Multiresolution Channel Decomposition for H 264/AVC Unequal Error Protection
... (i.e. QPSK base layer symbols car- rying high profile unit to more rugged carriers where the spectral efficiency is not a concern), and the fined modu- lated symbol of the MR constellation to fined coeffi- cients ...
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1. Design and measurement of ber of faded qpsk modulated system
... Modulation [3] is the process of changing the amplitude, frequency or phase of a radio frequency carrier signal (a carrier) to change with the information signal (such as voice or data). Four modulations are supported by ...
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High dimensionality carrierless amplitude phase modulation technique for radio over fiber system
... Recently, higher order modulation formats are broadly studied for long haul optical communication systems. These high order modulation formats include quadrature phase shift keying (QPSK), quadrature amplitude ...
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WIMAX-802.16E MIMO (2×4 AND 2×8) SYSTEM WITH AWGN CHANNEL Pratik Bhiwapurkar1, Mukesh Patidar2, Shyam Gehlot3, Dr. Pragya Nema4
... In this analysis we are used in AWGN (Additive White Gaussian Noise) and different modulation schemes used like BPSK, QPSK, 8-QAM and 16-QAM. The performance of used New scheme Alamouti with ...
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A Dynamic Reconcile Algorithm for Address Generator in WiMAX Deinterleaver
... WiMAX performs its operation based upon the IEEE standard specified in [1] which pronounces the code rates, interleaver depths within the specified modulation schemes. WiMAX can be regarded as a replacement for the ...
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Applications of Differential CDMA Schemes and Control Technology for Distribution Substations
... This paper presents an approach to achieve monitoring and control of distribution systems in a distribution substation using power-line communication (PLC) combined with Hadamard code. Four different techniques, i.e., ...
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OFDM AS AN ACCESS TECHNIQUE FOR NEXT GENERATION NETWORK
... With the rapid growth of digital wireless communication in recent years, the need for high speed mobile data transmission has increased. New modulation and access techniques are being implemented to keep up with the ...
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BER Comparison of SC-FDMA and OFDM System Using Different Modulation Techniques
... impairments such as Doppler Shift due to user mobility and High-Power Amplifier (HPA) distortion when amplifying the transmitted OFDM symbol. It was shown that the resulting inter-carrier interference (ICI) generated by ...
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Performance Improvement of Wi-MAX System using QAM Modulation and Moving Average Filter
... Abstract - WiMAX is introduced by the Institute of Electrical and Electronic Engineers (IEEE). Wireless provides a worldwide interoperability for microwave access. Now-a- days telecommunication industries are highly ...
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