rate fading channels cdma
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Turbo-Coded ARQ Schemes for DS-CDMA Data Networks Over Fading and Shadowing Channels: Throughput, Delay, and Energy Efficiency
White Paper In this paper, modified ARQ (Automatic-Repeat-Request) techniques based on turbo coding are investigated for asynchronous DS-CDMA (Direct-Sequence Code-Division Multiple-Access) data networks under shadowing and frequency selective fading channel... [03 Jul 2008]
On Wideband CDMA: Capacity-Enhanced Techniques
White Paper It emphasizes how the technique deals with BER, power control, and fading (soft handover). This paper reviews the technical literature to discuss some of the basic characteristics of W-CDMA that makes it attractive for high capacity and data-rate... [03 Jul 2008]
A New CDMA/SDMA Structure With Transmit Diversity
White Paper Space-time block codes can provide good performance in wireless fading channels through spatial diversity. An analysis of the system performance is given for a Rayleigh fading channel. Here these two techniques are combined to produce a new... [03 Jul 2008]
Spectral Efficiency of Multicarrier CDMA
White Paper This paper analyzes the spectral efficiency (sum-rate per sub-carrier) of randomly spread synchronous multi-carrier code-division multiple access (MC-CDMA) subject to frequency-selective fading in the asymptotic regime of number of users and... [26 Jul 2005]
ML Estimation and Correction of Frequency Offset for MC-CDMA Systems Over Fading Channels
White Paper MC-CDMA system performance degrades significantly even with frequency offset only of a few percent of the data transmission rate. The likelihood function for the frequency offset of the MC-CDMA system is derived in the case of low SNR conditions. [26 Jul 2005]
Throughput Analysis for W-CDMA System With MIMO and AMC
White Paper The channels are assumed to be Rayleigh fading channels. MERL evaluated the average throughput of two types of W-CDMA systems with Multiple-input-multiple-output and adaptive modulation and coding by numerical simulation and theoretic analysis. [03 Aug 2004]
Performance of an Improved Modified MMSE Receiver for CDMA Systems in Rayleigh Fading
White Paper In this paper, the bit error rate of a recently proposed modified minimum mean squared error (MMSE) detector in Rayleigh flat fading channels is improved. An asynchronous binary phase shift keying (BPSK) direct sequence code division multiple... [24 Jul 2004]
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