MC-CDMA
Joint multiuser detection and cancelation of nonlinear distortion effects for the uplink of MC-CDMA systems
... As with other multicarrier schemes, the MC-CDMA sig- nals have strong envelope fluctuations and high PMEPR values (Peak-to-Mean Envelope Power Ratio), which lead to amplifi- cation difficulties. For this ...
5
Joint turbo equalization and cancelation of nonlinear distortion effects in MC-CDMA signals
... consider MC-CDMA schemes with appropriate channel coding ...conventional MC-CDMA signals we employ the clipping and frequency-domain fil- tering techniques considered in ...
5
IB-DFE receiver techniques for CP-assisted block transmission within DS-CDMA and MC-CDMA systems
... ther MC (MultiCarrier) or SC (Single-Carrier) modulations [1], ...in CDMA systems, it leads to MC-CDMA implementations [3], [4], [5], and also, as recently recognized, quite efficient ...
5
New Iterative Frequency-Domain Detectors for IA-Precoded MC-CDMA Systems
... for MC-CDMA systems with closed-form interference alignment (IA) at the transmitted ...MIMO MC-CDMA ...for MC-CDMA based systems, linear equalization is not the most efficient ...
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Turbo multiuser detection for MC-CDMA signals with strongly nonlinear transmitters
... schemes, MC-CDMA signals have strong envelope fluctuations and high PMEPR values (Peak-to-Mean Envelope Power Ratio), which lead to ampli- fication ...
5
Turbo equalization with cancellation of nonlinear distortion effects for CP-Assisted and Zero-Padded MC-CDMA signals
... of CDMA schemes with the advantages of OFDM modulations (Orthogonal Frequency Division ...multicode MC-CDMA signals was proposed in [2], which have asymptotic performances that can be close to the ...
6
Analytical evaluation of nonlinear effects in MC-CDMA signals
... of MC-CDMA signals in the presence of nonlinear ...of MC-CDMA signals with a large number of subcarriers and employ re- sults on memoryless nonlinear devices with Gaussian in- puts so as to ...
6
An iterative frequency-domain decision-feedback receiver for MC-CDMA schemes
... The MC-CDMA schemes (Multicarrier Coded Division Multiple Access) [1], [2] combine a CDMA scheme with an OFDM modulation (Orthogonal Frequency Division Mul- tiplexing) [3], so as to allow high ...
5
A turbo SDMA receiver for strongly nonlinearly distorted MC-CDMA signals
... depicted in Fig. 2 is based on the nonlinear signal processing schemes proposed in [2] for reducing the PMEPR of OFDM signals. Within that transmitter, N 0 − N zeros are added to the original frequency-domain block ...
6
IB-DFE receivers with space diversity for CP-assisted DS-CDMA and MC-CDMA systems
... both MC-CDMA and DS-CDMA, the FDE coefficients can be optimized under the MMSE criterion (Minimum Mean Squared Error), so as to avoid significant noise ...and MC-CDMA systems with ...
12
Analytical evaluation of nonlinear effects in MC-CDMA signals
... in MC-CDMA transmission. It is assumed that the MC-CDMA signals have a spreading factor K = 64 and each user has M = 16 data symbols per block, corresponding to MC-CDMA blocks ...
9
Sequências perfeitas para sistemas de comunicação com acesso múltiplo por divisão de código
... Access), MC-CDMA (Multi- -Carrier Code Division Multiple Access), múltiplas portadoras DS-CDMA, MT-CDMA (Multi-Tone - Code Division Multiple Access) e em OFDM (Orthogonal Frequency- -Division ...
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Mulheres MC’s e as batalhas de rap como forma de resistência através das rimas: cultura de rua e narrativas de si
... mulheres MC‟s, estudamos como padrões de percepção negativa, principalmente de mulheres, surgem ou são reafirmados nas batalhas de ...pelas MC‟s em seus depoimentos poderiam nos auxiliar a verificar se as ...
19
Sensibilidade de hortaliças (Lactuca sativa L. e Eruca sativa Mill.) à exposição de extratos brutos de cianobactéria tóxica e não tóxica
... in MC–75 and MC–100 and in MC+10. The dry mass increased in MC–100 (Table 1 ...in MC+50 and MC+75, reaching 30% reduction in MC+100 (Table 2 ...without MC–LR ...
6
Avaliação das condutas adotadas por profissionais na utilização de coroas metalo-cerâmicas.
... restauração MC dos dentes anteriores pode ser explicada pela menor difusão dos resultados satisfatórios das restaurações de cerâmica pura (In-Ceram, IPS Empress II e Procera) nessa região, em comparação à região ...
11
Efeitos alelopáticos de microcistinas em rúcula (Eruca sativa Mill.)
... Em estudos com células de tabaco (Nicotiana tabacum L.) BY-2 expostas a MC-RR em concentração de 60.000 µg.L -1 durante 5 dias, foram observadas várias alterações morfológicas, tais como alongamento anormal, ...
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ALISE DE DESEMPENHO DE SISTEMAS CDMA, UTILIZANDO MULTI-PORTADORAS E MULTI-C ´ ODIGOS
... O CDMA utiliza uma tecnologia denominada espalhamento espectral (Spread Spectrum) (SS-CDMA), usada em transmiss˜oes militares desde a d´ecada de ...de CDMA fica pior com o aumento do n´ umero de ...
158
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 ...
6
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 ...
11
VALIDAÇÃO ESTOCÁSTICA DE UM RECEPTOR RFID COM MÚLTIPLO ACESSO POR DIVISÃO DE CÓDIGO E PROCESSAMENTO POR DECOMPOSIÇÃO DE FATORES PARALELOS.
... O método de Monte Carlo (MMC) pode ser descrito como um método estatístico no qual se utiliza uma sequência de números aleatórios para a realização da simulação de um cenário moldado com características reais. Portanto a ...
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