DS-CDMA mobile system
Throughput Improvement of STS-Based MC DS-CDMA System with Variable Spreading Factor
... Future mobile radio systems require multirate transmission capability to efficiently support various services with wide range of data ...the system. Further more, from the BER curves of the STS-based MC ...
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Performance Analysis of A Ds Cdma System by using Rayleigh and Nakagami M Fading Channel
... With the tremendous increment in the users count and introduction of new features including web browsing. In the past few years, the request for bandwidth has started to surpass the availability in wireless networks. ...
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Single and Multi Carrier DS CDMA: Multi USer Detection, Space Time Spreading, Synchronisation, Standards and Networking
... of DS/CDMA cellular system using channel activation and soft power control techniques,” in Proceedings of the IEEE Inter- national Symposium on Personal, Indoor and Mobile Radio Communications ...
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A Robust Parametric Technique for Multipath Channel Estimation in the Uplink of a DS CDMA System
... Direct sequence-code division multiple access (DS-CDMA) is a widely accepted multiple access technique already in use in several real-life systems, such as the universal mobile telecommunications ...
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Improving the Throughput of DS CDMA Systems Using Adaptive Rate Transmissions Based on Variable Spreading Factors
... of DS-CDMA systems can be increased, when the con- ventional matched filter based receiver is ...cell DS-CDMA system, where the number of ac- tive mobile users obeys the Poisson ...
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Performance Improvement of Wireless communication System of DS CDMA with Rake Receiver
... the CDMA Rake receiver is used. In a wireless mobile communication system, a signal can travel from transmitter (TX) to receiver (RX) over multiple paths; this phenomenon is referred to as multipath ...
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Serial Acquisition of DS CDMA Signals in Multipath Fading Mobile Channels
... acquisition system operates at an average SNR/bit in the range of 5–20 dB, which implies that the average SNR/chip is in the range of 16 to 1 dB, then it can be concluded that for this type of acquisition ...
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FPGA Implementation of Low Complexity VLSI Architecture for DS CDMA Communication System
... The problem is, therefore, to design hardware based CDMA communication system which works on the principles of direct sequence spread spectrum technology. The design must be easy to use, better in ...
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Pre-Decorrelation for Coded DS-CDMA System with Space-Time Block Coding
... The new generations of mobile communications systems aim to provide enhanced voice, text and data services to the user. These demands give rise to the complexity and power consumption of the user terminal (UT) ...
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Smart Antenna Based DS-CDMA System Design for Third Generation Mobile Communication
... 5. Fakoukakis, F. E., S. G. Diamantis, A. P. Orfanides, and G. A. Kyriacou, “Development of an adaptive and a switched beam smart antenna system for wireless communications,” J. of Electromagn. Waves and Appl., ...
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Exact Performance Measures for Direct-Sequence Code Synchronization in Fading Channels
... communication system (PCS) such as cellular, microcellular, indoor, and satellite communications ...wideband CDMA (W-CDMA) are both based on direct-sequence CDMA (DS-CDMA) ...
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Analysis of Carrier Frequency Selective Offset Estimation - Using Zero-IF and ZCZ In MC-DS-CDMA
... al-to-parallel converted data stream is multiplied with the spreading sequence, and then the chips belonging to the same symbol modulate the same subcarrier. Here the spreading is done in the time domain. Thus this ...
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Performance Enhancement of DS-CDMA System using Extended BPSK Modulation Scheme
... technique. DS-CDMA is one of the competitive and most investigated technique in wireless communication which caters the large demand at the same time with limited ...a DS- CDMA ...
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Sphere Decoding for Space time Multiuser Detection in STBC DS CDMA System
... In this paper we have proposed a new uplink DS-CDMA system. The Simulations of sphere decoding space-time multiuser detection algorithm in our system and classical decorrelating multiuser ...
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Subband Adaptive Array for DS CDMA Mobile Radio
... practical DS-CDMA systems often su ff er multipaths with delays of about several chips, and in such case, the implicit 2D RAKE can achieve relatively equivalent performance of the standard 2D RAKE ...
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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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A Multicarrier DS CDMA System Using Both Time Domain and Frequency Domain Spreading
... (MC DS- CDMA) scheme, which employs both time (T)-domain and frequency (F)-domain ...MC DS-CDMA, when communicating over an additive white Gaussian noise (AWGN) ...
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Link Adaptation for Framed Multimedia Data Transmission over a DS CDMA Communication System
... hand, DS- CDMA communication systems such as the Universal Mo- bile Telecommunication System (UMTS) are framed-based communication systems [1, ...
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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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A Unified Exact BER Performance Analysis of Asynchronous DS CDMA Systems Using BPSK Modulation over Fading Channels
... asynchronous DS- CDMA systems using BPSK modulation for transmissions over Rayleigh, Ricean, Hoyt and Nakagami- m fading ...asynchronous DS- CDMA system using BPSK modulation and ...
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