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公开(公告)号：ES2811775T3
公开(公告)日：2021-03-15
申请号：ES11826023
申请日：2011-09-16
Applicant: QUALCOMM INC
Inventor： KIM YOUHAN , CHO JAMES , SHI KAI , ZHANG NING
Abstract: Un procedimiento (300), que comprende: seleccionar (304) una primera combinación de bandas de frecuencia para transmitir un primer paquete de datos, donde dicha primera combinación de bandas de frecuencia se selecciona de un espectro de frecuencia que incluye un primer segmento de frecuencia (S1) y un segundo segmento de frecuencia (S2), donde el primer segmento de frecuencia incluye un primer conjunto de bandas de frecuencia (B1, B2) y el segundo segmento de frecuencia incluye un segundo conjunto de bandas de frecuencia (B3, B4), donde dicha primera combinación de bandas de frecuencia incluye un primer conjunto de frecuencias y un segundo conjunto de frecuencias diferente del primer conjunto de frecuencias; parsear un flujo de datos asociado al primer paquete de datos en un primer conjunto de datos y un segundo conjunto de datos, estando dicho primer conjunto de datos asignado a dicho primer conjunto de frecuencias y estando dicho segundo conjunto de datos asignado a dicho segundo conjunto de frecuencias; procesar el primer conjunto de datos en paralelo con el segundo conjunto de datos, incluyendo dicho procesamiento paralelo una correlación espacial de dicho primer conjunto de datos con un primer conjunto de flujos usando un primer correlacionador espacial (460) y una correlación espacial de dicho segundo conjunto de datos con un segundo conjunto de flujos usando un segundo correlacionador espacial (460), distinto del primer correlacionador espacial; procesar cada uno de dicho primer conjunto de flujos por separado para proporcionar un primer conjunto de flujos procesados y procesar cada uno de dicho segundo conjunto de flujos por separado para proporcionar un segundo conjunto de flujos procesados por separado; y sumar un primer flujo de dicho primer conjunto de flujos procesados y un primer flujo de dicho segundo conjunto de flujos procesados para su transmisión en una primera antena (116); y sumar un segundo flujo de dicho primer conjunto de flujos procesados y un segundo flujo de dicho segundo conjunto de flujos procesados para su transmisión en una segunda antena (116).
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公开(公告)号：MY181684A
公开(公告)日：2020-12-31
申请号：MYPI2017001466
申请日：2011-09-16
Applicant: QUALCOMM INC
Inventor： SHI KAI , ZHANG NING
Abstract: A system and method for transmitting LDPC parameters is provided. In the method, an initial number of OFDM symbols (Nsym_init) is determined for a packet that is based on the number of information bits to be delivered in the packet (610). An STBC value is also determined ( 620). A number of extra symbols (Nsym_ext) value is generated based on the Nsym_init value, wherein a Nsym value is based on said Nsym_init value and said Nsym ext value (630). An Nldpc_ext value is determined based on the STBC value and the Nsym ext value for purposes of determining LDPC parameters associated with the packet (640).
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公开(公告)号：PH12015501068B1
公开(公告)日：2015-10-05
申请号：PH12015501068
申请日：2015-05-14
Applicant: QUALCOMM INC
Inventor： SHI KAI , ZHANG NING
IPC: H03M13/00
Abstract: A system and method for transmitting LDPC parameters is provided. In the method, an initial number of OFDM symbols (Nsym_init) is determined for a packet that is based on the number of information bits to be delivered in the packet. An STBC value is also determined. A number of extra symbols (Nsym_ext) value is generated based on the Nsym_init value, wherein a Nsym value is based on said Nsym_init value and said Nsym_ext value. An Nldpc_ext value is determined based on the STBC value and the Nsym_ext value for purposes of determining LDPC parameters associated with the packet.
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公开(公告)号：PH12015500556B1
公开(公告)日：2015-10-05
申请号：PH12015500556
申请日：2015-03-13
Applicant: QUALCOMM INC
Inventor： SHI KAI , ZHANG NING
IPC: H04L7/00
Abstract: In a multiple-input, multiple-output system, the wireless node's receive chain demodulation function is enhanced to include phase tracking. Instead of performing phase tracking during the data symbols which is cumbersome for very high throughput wireless networks, the VHT Long Training Fields (LTFs) embedded in the preamble of a frame are used for phase tracking. Single stream pilot tones are added during the transmission of VHT- LTFs. This is exploited on the receive side to be able to estimate the channel using the pilot tones in the first set of the Long Training Fields. Second set of the Long Training Fields are then used to estimate the phase of the pilot tones using the estimated channel. The phase estimation so obtained is continuously applied to other received data tones throughout the VHT-LTFs of the data symbols. The phase errors due to PLL mismatches and phase noise are reduced at reception, leading to better signal to noise ratio for different levels of parts per million drift and offset in frequency. Further, MIMO channel estimation is more accurate, which improves the overall wireless network when this accurate MIMO channel estimation data participates in calibration and handshake between wireless nodes.
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公开(公告)号：SG188523A1
公开(公告)日：2013-04-30
申请号：SG2013018312
申请日：2011-09-16
Applicant: QUALCOMM INC
Inventor： SHI KAI , ZHANG NING
Abstract: A system and method for transmitting LDPC parameters is provided. In the method, an initial number of OFDM symbols (Nsym_init) is determined for a packet that is based on the number of information bits to be delivered in the packet. An STBC value is also determined. A number of extra symbols (Nsym_ext) value is generated based on the Nsym_init value, wherein a Nsym value is based on said Nsym_init value and said Nsym_ext value. An Nldpc_ext value is determined based on the STBC value and the Nsym_ext value for purposes of determining LDPC parameters associated with the packet.
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Patent Agency Ranking
公开(公告)号：MY187788A
公开(公告)日：2021-10-23
申请号：MYPI2015000989
申请日：2011-08-26
Applicant: QUALCOMM INC
Inventor： SHI KAI , ZHANG NING
Abstract: In a multiple-input, multiple-output system, the wireless node's receive chain demodulation function is enhanced to include phase tracking (501). Instead of performing phase tracking during the data symbols which is cumbersome for very high throughput wireless networks, the VHT Long Training Fields (LTFs) embedded in the preamble of a frame are used for phase tracking. Single stream pilot tones (601) are added during the transmission of VHT- LTFs. This is exploited on the receive side to be able to estimate the channel using the pilot tones in the first set of the Long Training Fields. Second set of the Long Training Fields are then used to estimate the phase of the pilot tones using the estimated channel. The phase estimation so obtained is continuously applied to other received data tones (602) throughout the VHT-LTFs of the data symbols. The phase errors due to PLL mismatches and phase noise are reduced at reception, leading to better signal to noise ratio for different levels of parts per million drift and offset in frequency. Further, MIMO channel estimation (504) is more accurate, which improves the overall wireless network when this accurate MIMO channel estimation data participates in calibration and handshake between wireless nodes. (Figure 5)
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公开(公告)号：MY165716A
公开(公告)日：2018-04-20
申请号：MYPI2013000785
申请日：2011-09-16
Applicant: QUALCOMM INC
Inventor： SHI KAI , ZHANG NING
Abstract: A SYSTEM AND METHOD FOR TRANSMITTING LDPC PARAMETERS IS PROVIDED. IN THE METHOD, AN INITIAL NUMBER OF OFDM SYMBOLS (NSYM_INIT) IS DETERMINED FOR A PACKET THAT IS BASED ON THE NUMBER OF INFORMATION BITS TO BE DELIVERED IN THE PACKET. AN STBC VALUE IS ALSO DETERMINED. A NUMBER OF EXTRA SYMBOLS (NSYM_ EXT) VALUE IS GENERATED BASED ON THE NSYM_INIT VALUE, WHEREIN A NSYM VALUE IS BASED ON SAID NSYM_INIT VALUE AND SAID NSYM_EXT VALUE. AN NLDPC EXT VALUE IS DETERMINED BASED ON THE STBC VALUE AND THE NSYM_EXT VALUE FOR PURPOSES OF DETERMINING LDPC PARAMETERS ASSOCIATED WITH THE PACKET.(FIGURE 2)
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公开(公告)号：HUE034278T2
公开(公告)日：2018-02-28
申请号：HUE11826020
申请日：2011-09-16
Applicant: QUALCOMM INC
Inventor： SHI KAI , ZHANG NING
IPC: H04L1/00
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公开(公告)号：CA2807383C
公开(公告)日：2017-06-13
申请号：CA2807383
申请日：2011-08-26
Applicant: QUALCOMM INC
Inventor： SHI KAI , ZHANG NING
Abstract: In a multiple-input, multiple-output system, the wireless node's receive chain demodulation function is enhanced to include phase tracking. Instead of performing phase tracking during the data symbols which is cumbersome for very high throughput wireless networks, the VHT Long Training Fields (LTFs) embedded in the preamble of a frame are used for phase tracking. Single stream pilot tones are added during the transmission of VHT- LTFs. This is exploited on the receive side to be able to estimate the channel using the pilot tones in the first set of the Long Training Fields. Second set of the Long Training Fields are then used to estimate the phase of the pilot tones using the estimated channel. The phase estimation so obtained is continuously applied to other received data tones throughout the VHT-LTFs of the data symbols. The phase errors due to PLL mismatches and phase noise are reduced at reception, leading to better signal to noise ratio for different levels of parts per million drift and offset in frequency. Further, MIMO channel estimation is more accurate, which improves the overall wireless network when this accurate MIMO channel estimation data participates in calibration and handshake between wireless nodes.
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公开(公告)号：CA2807383A1
公开(公告)日：2012-03-01
申请号：CA2807383
申请日：2011-08-26
Applicant: QUALCOMM INC
Inventor： SHI KAI , ZHANG NING
IPC: H04L7/00
Abstract: In a multiple-input, multiple-output system, the wireless node's receive chain demodulation function is enhanced to include phase tracking. Instead of performing phase tracking during the data symbols which is cumbersome for very high throughput wireless networks, the VHT Long Training Fields (LTFs) embedded in the preamble of a frame are used for phase tracking. Single stream pilot tones are added during the transmission of VHT- LTFs. This is exploited on the receive side to be able to estimate the channel using the pilot tones in the first set of the Long Training Fields. Second set of the Long Training Fields are then used to estimate the phase of the pilot tones using the estimated channel. The phase estimation so obtained is continuously applied to other received data tones throughout the VHT-LTFs of the data symbols. The phase errors due to PLL mismatches and phase noise are reduced at reception, leading to better signal to noise ratio for different levels of parts per million drift and offset in frequency. Further, MIMO channel estimation is more accurate, which improves the overall wireless network when this accurate MIMO channel estimation data participates in calibration and handshake between wireless nodes.
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