SA/CDMA
Performance of Generalized Multicarrier DS CDMA over Nakagami $m$ Fading Channels
... can be optimized according to specific design requirements tailored to the communication environments encountered, in order to achieve the optimum performance in terms of . For example, for a given total system ...
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Download complete issue: Vol. 2, No. 1 (PDF)
... Dr. Hoga Saragih, ST, MT. was born in Bandung, Indonesia on the 15th of August 1976. He received his Bachelor of Engineering degree in electrical engineering from Christian Krida Wacana University in 1998. He completed ...
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Analytical Bit Error Rate Performance of DS CDMA Ad Hoc Networks using Large Area Synchronous Spreading Sequences
... Abstract: The performance of large area synchronous (LAS) direct sequence code division multiple access (DS-CDMA) assisted ad hoc networks is investigated in the context of a single-hop infinite mesh of ...
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Fractionally Spread Multicarrier CDMA: A Multiple Access Scheme for Various Wireless Channels
... In MC-CDMA communication systems [1]-[7], the total bandwidth available is divided into a number of subbands, where each subband may employ direct-sequence (DS) spread- ing and each subband signal is transmitted ...
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On the Uplink Performance of LAS CDMA
... Having obtained the decision variables of the MRC’s output samples, let us now analyze the BER performance of the proposed LAS-CDMA system and benchmark it against a random code based CDMA system using ...
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BER performance of MC DS CDMA systems in the presence of timing jitter : a thesis presented in partial fulfillment of the requirements for the degree of Master of Engineering in Information and Telecommunication Engineering at Massey University, Palmerston North, New Zealand
... The MT-DS-CDMA transmitter spreads the serial-to-parallel converted data streams using a given spreading code in the time domain so that the spectrum of each sub-carrier before spreading operation can satisfy the ...
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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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A Unified Exact BER Performance Analysis of Asynchronous DS CDMA Systems Using BPSK Modulation over Fading Channels
... For the sake of computational simplicity, the most widely used approach invoked for calculating the average BER of DS-CDMA systems is that of assuming that the Multiple Access Interference (MAI) is Gaussian ...
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Optimum Detection of CDMA
... asynchronous CDMA with Walsh-Hadamard Code or Pseudo random sequence as the spreading ...synchronous CDMA, we transmit , where C n,i is the chip sequence ...
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Slow Frequency Hopping Multicarrier DS CDMA for Transmission over Nakagami Multipath Fading Channels
... is a variable, allowing us to study the effect of different diversity orders. Upon exploiting the explicit knowledge of the FH patterns, detection can be implemented by demodulating only the active subcarriers. ...
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Exploring the reconfigurability options of multi carrier CDMA in cognitive radio systems
... Two main variations of the multi-carrier spread spectrum sys- tems are the MC-CDMA (frequency domain spreading) and MC direct sequence CDMA (MC-DS-CDMA) (time domain spreading). One way of looking at ...
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A Novel "Near Orthogonal Spreading Codes" and its Performance Analysis
... of CDMA system. CDMA system can serve a large number of users over the same bandwidth by assigning a unique code to each of the users ...in CDMA system we have to require a large number of distinct ...
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PAPR Reduction Based on Proposed Rotating Phase Shift Technique in MC CDMA Using FPGA
... shown in Table 3, for parallel processing of the time domain symbols, a multiplexer is incorporated where the select inputs are selected by a select maximum value. In addition, the PAPR calculation of this MC-CDMA ...
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Clinical and molecular characteristics of invasive community acquired Staphylococcus aureusinfections in Chinese children
... Patients (≤14 years old) with invasive CA-SA infections were prospectively recruited from three regional children’s hospitals between December 2011 and February 2013. Clinical data, such as general demographic ...
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Performance of multicarrier complementary coded CDMA under frequency selective Nakagami m fading channels
... coded CDMA with conventional CDMA systems employ- ing Walsh codes to show the advantage of CC-CDMA in obtaining large diversity gain when incorporating PIC with different combining ...
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WCDMA in Malaysia
... with CDMA2000 would have beneficially enabled roaming on existing networks beyond Japan, since Qualcomm CDMA2000 networks are widely deployed, especially in the Americas, with coverage in 58 countries in 2006 [1]. ...
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A Unified Approach to the Analysis of Multicarrier DS CDMA over Nakagami $M$ Fading Channels
... of CDMA and orthogonal fre- quency division multiplexing (OFDM) schemes - which is referred to as multicarrier CDMA (MC-CDMA) - has drawn a lot of atten- tion [1, 2, 3, 4, ...
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A Proposed Turbo Coded Wavelet Packet Modulation based MC CDMA
... modulation, CDMA signal is spreaded over several carriers by which frequency diversity is achieved similar to path diversity in Rake receiver, but with lower complexity of equalization in the frequency domain ...
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Time Hopping Multicarrier Code Division Multiple Access: System Outline and Performance
... 7 shows the bit error probability of the TH/MC-CDMA The detection operation of the TH/MC-CDMA system can systems with respect to supporting various number of users, be understood by mean[r] ...
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Performance Comparison of FH/MC DS CDMA with Single and Multi Carrier DS CDMA
... The multiple-access scheme is constituted by frequency-hopping FH based multicarrier DS-CDMA FWMC DS-CDMA, where the entire bandwidth of future systems can be divided into a number of su[r] ...
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