DS-CDMA
IB-DFE receivers with space diversity for CP-assisted DS-CDMA and MC-CDMA systems
... and DS-CDMA, the FDE coefficients can be optimized under the MMSE criterion (Minimum Mean Squared Error), so as to avoid significant noise ...CP-assisted DS-CDMA systems and MC-CDMA ...
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An iterative detection technique for DS-CDMA signals with strong nonlinear distortion effects
... a DS-CDMA signal (Direct Se- quence Code Division Multiple Access) is the sum of several components associated to different spreading codes ...the DS-CDMA signal to be transmitted by the BS ...
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A frequency-domain receiver for asynchronous systems employing CP-assisted DS-CDMA schemes
... CP-assisted (Cyclic Pre¯x) block transmission techniques are known to be appropriate for severely time-dispersive channels, since they allow low- complexity, FFT-based (Fast Fourier Transform) re- ceiver implementations ...
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Iterative detection of multicode DS-CDMA signals with strongly nonlinear transmitters
... multicode DS-CDMA systems with iterative estimation and cancelation of nonlinear distortion ...In DS-CDMA this can mean high residual interference levels especially when different powers are ...
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Iterative detection of multicode DS-CDMA signals with strong nonlinear distortion effects
... In this paper we consider multi-resolution broadcasting sys- tems using CP-assisted DS-CDMA schemes. We have several parallel streams with different powers so as to achieve multi- resolution. The ...
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DS-CDMA Cellular Systems Performance with Base Station Assignment, Power Control Error and Beamforming over Multipath Fading
... multiple-cell DS-CDMA system with the space diversity processing, Rayleigh frequency-selective channel model, power control error, and base station ...
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Multiuser Detection for the Uplink of Prefix-Assisted DS-CDMA Systems Employing Multiple Transmit and Receive Antennas
... DS-CDMA schemes can be combined with CP-assisted block transmission techniques, allowing a frequency-domain receiver design that have relatively low complexity, even for severely time-dispersive channels. ...
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Frequency-domain multiuser detection for CP-assisted DS-CDMA signals
... combine DS-CDMA schemes with CP-assisted block transmission techniques, allowing a frequency-domain receiver design that have relatively low complexity, even for severely time-dispersive ...
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Frequency- domain multiuser detection for highly overloaded DS-CDMA systems
... Abstract—A DS-CDMA (Direct Sequence-Coded Division Mul- tiple Access) system has maximum spectral efficiency if the system is fully loaded ...assisted DS-CDMA systems with bandwidth that can ...
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IB-DFE receiver techniques for CP-assisted block transmission within DS-CDMA and MC-CDMA systems
... both DS-CDMA and MC-CDMA, we considered an orthogonal spreading (Hadamard-Walsh sequences plus pseudo-random scrambling sequences with the same chip rate) and the power amplifier at the transmitter ...
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Estudo do efeito de dipolos em arranjos de antenas adaptativas de sistemas de comunicação DS-CDMA
... Esta dissertação de mestrado vem trazer um estudo sobre alguns aspectos que influenciam na aplicação de antenas adaptativas em sistemas celulares DS-CDMA (ou simplesmente CDMA). Foram detalhados ...
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Sequências perfeitas para sistemas de comunicação com acesso múltiplo por divisão de código
... em DS- -CDMA (Direct Sequence - Code Division Multiple Access), MC-CDMA (Multi- -Carrier Code Division Multiple Access), múltiplas portadoras DS-CDMA, MT-CDMA (Multi-Tone - Code ...
281
Performance Evaluation of CDMA Router for Network-On-Chip
... [8] Ryuji Yoshimura, Tan Boon Keat, Toru Ogawa, Shingo Hatanaka,Toshimasa Matsuoka, Kenji Taniguchi “DS-CDMA Wired Bus with Simple Interconnection Topology for Parallel Processing System LSIs” in IEEE ...
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Detecção multiusuário baseada em tensores para sistemas de comunicação sem fio cooperativos
... The system model considered in this work is a DS-CDMA uplink with M users transmitting to a base station with the help of relay-aided links using the AF protocol. The links between a given user and one ...
115
An iterative frequency-domain decision feedback receiver for CDMA systems
... for DS-CDMA systems was recently proposed [10], ...in DS-CDMA wireless systems employing orthogonal spreading, since all codes are affected by the same multipath channel, which simplifies the ...
5
Resistência à penetração em Neossolo Quartzarênico submetido a diferentes formas de manejo.
... entre essas variáveis; no solo sob PASTO foram obtidos maiores teores de MO e RP em relação à RT nos dois períodos de amostragem, exceto no PS na camada de 00-05 cm. Esses resultados são atribuídos à carga animal ...
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Estudo geocronológico de sedimentos correlatos à Formação Rio Claro
... Para garantir a veracidade dos resultados obtidos, buscou-se aprimorar a técnica de dosimetria utilizada pelo laboratório. Uma análise dosimétrica inicia-se a partir da coleta do material a ser estudado. Durante a coleta ...
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A CDMA Based Scalable Hierarchical Architecture for Network-On-Chip
... Similar to the structure of the local switch, the central switch contains a Network Arbiter and a CDMA transmitter. An extra decoder is added in the central switch structure, its functionality will be explained ...
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Influência da condutividade elétrica, concentração iônica e vazão de soluções nutritivas na produção de alface hidropônica.
... The porpose of this work was to study the effect of different nutrient solutions applied in two outflow in the hidroponic yeld of lettuce (Lactuca sativa). This research was accomplished at greenhouse through hydroponic ...
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