2019
DOI: 10.1109/tsp.2019.2919411
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Channel Estimation for Orthogonal Time Frequency Space (OTFS) Massive MIMO

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Cited by 264 publications
(69 citation statements)
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“…Finally, the delay and Doppler taps (given in Figure 2 c) are estimated and passed to the MP algorithm to detect the transmitted symbols. The MP detection approach is used in this research because the representation of the communication channel in the delay-Doppler domain has a 3D (delay, Doppler, and angle) structured sparsity [ 39 , 40 ]. As a result, the MP algorithm provides good performance with minimal complexity for the indoor environment with a small number of channel taps [ 41 ].…”
Section: Waveform Modulation and Demodulationmentioning
confidence: 99%
“…Finally, the delay and Doppler taps (given in Figure 2 c) are estimated and passed to the MP algorithm to detect the transmitted symbols. The MP detection approach is used in this research because the representation of the communication channel in the delay-Doppler domain has a 3D (delay, Doppler, and angle) structured sparsity [ 39 , 40 ]. As a result, the MP algorithm provides good performance with minimal complexity for the indoor environment with a small number of channel taps [ 41 ].…”
Section: Waveform Modulation and Demodulationmentioning
confidence: 99%
“…However, those schemes are adopted only at microwave frequencies, and the mmWave beamspace channels with special sparse structure cannot be modeled by the one-order Markov process. Additionally, support detection based beamspace channel estimation schemes were designed by Gao et al (2017b) and Shen et al (2019). Gao et al (2017a) and Bourdoux et al (2011) proposed channel estimation and tracking algorithms for time-varying beamspace channels.…”
Section: Introductionmentioning
confidence: 99%
“…Considerando las numerosas investigaciones en curso sobre el escenario 5G y las comunicaciones móviles de esta tecnología, podemos destacar las referentes a la modulación en el Espacio de Tiempo-Frecuencia Ortogonal (OTFS, por sus siglas en inglés) [1][2][3][4][5][6][7][8][9][10]. La modulación OTFS puede compensar el retraso y el efecto de propagación Doppler de alta velocidad mediante el uso de las Transformadas Inversa-Discreta / Discreta de Fourier (IDFT / DFT, por sus siglas en inglés, respectivamente) en dos dimensiones (2D), que convierten la señal del dominio del tiempo al dominio de la frecuencia.…”
Section: Introductionunclassified
“…La figura 1 muestra el diagrama de bloques del sistema de comunicación con modulaciones OFDM y OTFS de un solo portador, en donde se pueden observar todos los procesos antes descritos. Por todo lo mencionado anteriormente, este trabajo se centra en los conceptos básicos de la tecnología de modulación OTFS, que según las investigaciones recientes [1][2][3][4][5][6][7][8][9][10], es la que mejor responde a las nuevas necesidades de aumento en la velocidad y la capacidad de los canales de transmisión; además de que compensa de forma simple los retrasos Doppler en entornos de alta movilidad [1].…”
Section: Introductionunclassified