synchronous DS-CDMA signals
Time and Frequency Domain Spreading Assisted MC DS CDMA using Interference Rejection Spreading Codes for Quasi Synchronous Communications
... MC DS-CDMA signal is identified with the aid of two spreading sequences, one applied in the context of the T-domain and one in the ...MC DS-CDMA signals by invoking two different ...
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Performance Analysis of Multi User Detectors for Synchronous DS CDMA Systems
... 2) PN Sequence: The PN sequence is produced by the pseudo-random noise generator that is simply a binary linear feedback shift register, consisting of XOR gates and a shift register. This PN generator has the ability to ...
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Blind estimation of long and short Pseudo random codes in multi rate LSC DS CDMA signals
... DSSS signals, but they can’t be directly applied to multi-rate DS-CDMA ...multi-rate DS-CDMA ...multi-rate CDMA signals’ code chip ...and synchronous multi-rate ...
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Spreading Sequence Design for Multiple Cell Synchronous DS CDMA Systems under Total Weighted Squared Correlation Criterion
... multicellular synchronous DS-CDMA system on uplink is ...WBE signals of each cell is preserved in the extended signal space associated to multicellular ...
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Analytical Bit Error Rate Performance of DS CDMA Ad Hoc Networks using Large Area Synchronous Spreading Sequences
... Every node in the network has four neighbours, connected by the edges, as seen in Fig. 1. We assume that the maximum affordable transmit power only supports com- munications between immediate neighbours. If a packet has ...
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Analysis of a Combined Antenna Arrays and Reverse Link Synchronous DS CDMA System over Multipath Rician Fading Channels
... be synchronous, while the remaining branch signals are asynchronous, since this can be readily achieved by powerful state-of-art CDMA synchronization techniques ...as synchronous for l = 0 but ...
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Support Vector Machine Multiuser Receiver for DS CDMA Signals in Multipath Channels
... in DS-CDMA systems and will reduce this inherent immunity to ...for DS-CDMA systems [2]–[4]. In a DS-CDMA system, the objective of the receiver is to detect the transmitted ...
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Spectrally Efficient Four Dimensional M-ary QAM for Synchronous DS-CDMA
... 2 DS-CDMA synchronous downlink channel is explored analytically using CT signals and p erformance measures obtained for comparison with other systems ...
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Performance of Reverse Link Synchronous DS CDMA System on a Frequency Selective Multipath Fading Channel with Imperfect Power Control
... of DS-CDMA system is mainly limited by multiple-access interference (MAI), and thus techniques to reduce the MAI, such as multiuser detection or interfer- ence cancellation, are currently of great interest ...
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Multiuser Detection for Synchronous DS-CDMA in AWGN Channel
... conventional CDMA is an interference limited system when MAI is increasing with the number of active users, and when signals are received with different power levels due to near-far ...and ...
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Slow Frequency Hopping Multicarrier DS CDMA for Transmission over Nakagami Multipath Fading Channels
... SFH/MC DS-CDMA system is actually reduced to a con- ventional MC DS-CDMA ...SFH/MC DS-CDMA system is significantly lower, than that of the corresponding conventional SC ...
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A Combined Antenna Arrays and Reverse Link Synchronous DS CDMA System over Frequency Selective Fading Channels with Power Control Error
... Seung-Hoon Hwang received the B.S. de- gree in electrical engineering and the M.S. and Ph.D. degrees in communication sys- tems from Yonsei University, Seoul, Korea in 1992, 1994, and 1999, respectively. His Ph.D. thesis ...
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Exploring the reconfigurability options of multi carrier CDMA in cognitive radio systems
... Equalization at the receiver side is necessary to counter the channel effects leading to the loss of orthogonality between the signals. Single-user detection (SUD) using linear equal- izers such as maximum ratio ...
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A Unified Exact BER Performance Analysis of Asynchronous DS CDMA Systems Using BPSK Modulation over Fading Channels
... of DS-CDMA systems is that of assuming that the Multiple Access Interference (MAI) is Gaussian distributed or condi- tional Gaussian distributed based on the Central Limit Theo- rem ...
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Multi Functional Antenna Array Assisted MC DS CDMA Using Downlink Preprocessing Based on Singular Value Decomposition
... MC DS-CDMA system using multiple BS transmit antenna arrays, where each antenna array employs multiple array ...MC DS-CDMA system using M transmit antenna arrays and length-N e T-domain ...
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MOVING TOWARD SYNCHRONOUS OPTICAL NETWORK STRATEGIES FOR EFFICIENT TELECOMMUNICATIONS TRANSPORT WITH INCREASED CONFIGURATION FLEXIBILITY AND BANDWIDTH AVAILABILITY
... many signals of different capacities through a synchronous, flexible, optical ...as synchronous transport signal–level 1, or simply STS–1, which operates at ...Higher-level signals are integer ...
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Performance and Analysis of DS CDMA Rake Receiver
... Wireless cellular telephony has been growing at a faster rate than wired-line telephone networks. The main factor driving this tremendous growth in wireless coverage is that it does not need the setting up of expensive ...
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VHDL Implementation of MAC based DSSS CDMA Protocol for Solving near Far Effect IN Ad hoc Network
... in DS SS CDMA ad hoc systems at the protocol level & at the same time also increases the throughput of network and reduce the hidden and exposed terminal ...
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Analysis of Carrier Frequency Selective Offset Estimation - Using Zero-IF and ZCZ In MC-DS-CDMA
... Abstract — A new method for frequency synchronization based upon Zero-Intermediate Frequency (Zero-IF) receiv- er and characteristics of the received signal’s power spec- trum for MC-DSCDMA-Uplink system is proposed in ...
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Performance and Analysis of DS-CDMA Rake Receiver and Analyzing the BER Performance in Presence of Nonlinear Distortion in DS-CDMA System
... contribute to BER degradation. The motivation of this work is to provide system designers/operators with efficient tools that provide potential insight into the interactions between CDMA signals and the ...
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