cellular DS-CDMA system
Performance of Cellular DS CDMA Systems Using Distributed Antennas
... BER versus coordinates x, y performance of the distributed antenna cellular DS-CDMA system supporting single user, when the user signal experiences pass-loss, lognormal shadowing slow fa[r] ...
5
Performance of MMSE Multiuser Detection in Cellular DS CDMA Systems Using Distributed Antennas
... The bit error rate BER performance of the distributed antenna cellular DS-CDMA system is investigated, when minimum mean-square error MMSE multiuser detection is employed, and when trans[r] ...
5
A Utility Based Downlink Radio Resource Allocation for Multiservice Cellular DS CDMA Networks
... In this paper, we define a novel utility function for each user that is a function of its channel status, its required ser- vice as well as the load condition of the corresponding serv- ing base station. This new ...
11
Reverse Link Performance of Synchronous Cellular DS CDMA Networks in Dispersive Rician Multipath Fading Channels
... Even though a user capacity degradation is encountered in realistic multiple-cell scenarios compared to the single-cell case, the system still exhibits a performance gain for the synchro[r] ...
5
Exact Performance Measures for Direct-Sequence Code Synchronization in Fading Channels
... communication system (PCS) such as cellular, microcellular, indoor, and satellite communications ...the cellular systems being considered, IMT-2000 and wideband CDMA (W-CDMA) are both ...
13
FPGA Implementation of Low Complexity VLSI Architecture for DS CDMA Communication System
... The fundamental concept used for transmitter and receiver hardware of cellular communication system is implemented for CDMA scheme. Transceiver is realized by developing VHDL codes and testing the ...
8
Exploring the reconfigurability options of multi carrier CDMA in cognitive radio systems
... in cellular networks), Gold codes have good cor- relation properties ...MC-CDMA system (using Walsh codes) in a down- link scenario and MC-DS-CDMA (using Gold codes) in the asynchronous ...
5
Performance and Analysis of DS CDMA Rake Receiver
... a CDMA system by varying the system parameters. CDMA is a popular technology in cellular system due to its superior capacity and ...conventional CDMA, obtained better ...
5
Analytical Bit Error Rate Performance of DS CDMA Ad Hoc Networks using Large Area Synchronous Spreading Sequences
... in cellular networks is limited by the low number of available spreading codes, this impediment is less restrictive in ad hoc networks, since the nodes only communicate with their ...positioning system ...
5
Performance and Analysis of DS-CDMA Rake Receiver and Analyzing the BER Performance in Presence of Nonlinear Distortion in DS-CDMA System
... a CDMA system by varying the system parameters. CDMA is a popular technology in cellular system due to its superior capacity and ...conventional CDMA, obtained better ...
6
Performance Analysis of A Ds Cdma System by using Rayleigh and Nakagami M Fading Channel
... of DS-CDMA system is highly influenced by this path gain component and noise ...sequence CDMA (MC-DS-CDMA) and orthogonal frequency division multiplexing ...of DS ...
5
Sphere Decoding for Space time Multiuser Detection in STBC DS CDMA System
... On the receiving side, we use CSI and spreading code of each user to generate space-time spreading channel matrix C i . Then we can use the sphere decoding algorithm of MIMO system as space-time multiuser ...
5
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 standard ...
12
A Multicarrier DS CDMA System Using Both Time Domain and Frequency Domain Spreading
... MC DS-CDMA systems are ...based DS-CDMA or MC-CDMA using solely T-domain spreading or solely F-domain spreading is utilized, these broadband systems may inevitably require a high ...
5
Analysis of Carrier Frequency Selective Offset Estimation - Using Zero-IF and ZCZ In MC-DS-CDMA
... Technological advances over the past two decades have led to the rapid evolution of the telecommunications industry. No longer limited to narrow-band voice signals, modern communications integrate voice, images, data, ...
5
Smart Antenna Based DS-CDMA System Design for Third Generation Mobile Communication
... antenna system and sectored antenna system, adaptive antenna array system referred in ...the system capacity in a multipath environment can be achieved by combining a set of beamformer & a ...
14
Pre-Decorrelation for Coded DS-CDMA System with Space-Time Block Coding
... It was shown that these techniques, though very effective in removing the MAI, demand high computational complexity, power and knowledge of spreading codes of all users. As a result, in the downlink of a CDMA ...
5
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 ...
8
Improving the Throughput of DS CDMA Systems Using Adaptive Rate Transmissions Based on Variable Spreading Factors
... In this section we analyze the effective throughput as well as the resultant average BER, when achieving this effective throughput. The effective throughput is defined as the total number of bits successfully transmitted ...
5
Performance Enhancement of DS-CDMA System using Extended BPSK Modulation Scheme
... Bit error rate (BER) plays a vital role in measurement and analysis of performance of any communication system. A system with good BER means the modulation which is being used has reduced the effect of ...
9