公开(公告)号：PH12014502434B1

公开(公告)日：2015-01-12

申请号：PH12014502434

申请日：2014-10-30

Applicant: QUALCOMM INC

Inventor： YANG LIN ,  KIM YOUHAN ,  VERMANI SAMEER ,  YUCEK TEVFIK ,  SAMPATH HEMANTH

IPC: H04L5/00 ,  H04W52/14 ,  H04W52/24

Abstract: Systems, methods, and devices for wireless communication are provided. In one aspect, an apparatus for wireless communication is provided. The apparatus includes a processor configured to generate a packet for transmission via a wireless signal. The packet is generated for transmission over a bandwidth of 1 MHz using at least one orthogonal frequency-division multiplexing (OFDM) symbol. The apparatus further includes a transmitter configured to transmit the packet via the wireless signal having a power spectral density. The power spectral density within +0.45 MHz of a center frequency of the wireless signal is at a first power spectral density level. The power spectral density between 0.45 MHz and 0.55 MHz from the center frequency of the wireless signal and between -0.45 MHz and -0.55 MHz from the center frequency of the wireless signal is less than the first power spectral density level. The power spectral density between 0.55 MHz and 1 MHz from the center frequency of the wireless signal and between -0.55 MHz and -1 Mhz from the center frequency of the wireless signal is less than -20 dBr with respect to the first power spectral density level. The power spectral density between 1 MHz and 1.5 MHz from the center frequency of the wireless signal and between -1 MHz and -1.5 MHz from the center frequency of the wireless signal is less than -28 dBr with respect to the first power spectral density level. The power spectral density is greater than +1.5 MHz from the center frequency of the wireless signal is less than -40 dBr with respect to the first power spectral density level.

公开(公告)号：CA2869327A1

公开(公告)日：2013-11-14

申请号：CA2869327

申请日：2013-05-07

Applicant: QUALCOMM INC

Inventor： YANG LIN ,  KIM YOUHAN ,  VERMANI SAMEER ,  YUCEK TEVFIK ,  SAMPATH HEMANTH

IPC: H04W52/14 ,  H04L5/00 ,  H04W52/24

Abstract: Apparatuses for wireless communication are provided. The apparatus includes a processor configured to generate a packet for transmission via a wireless signal. The packet is generated for transmission over a bandwidth of 1 MHz using at least one orthogonal frequency-division multiplexing (OFDM) symbol comprising 32 subcarriers described by indices from -16 to 15, wherein each of the 32 subcarriers has an average constellaton enrgy. The apparatus further includes a transmitter configured to transmit the packet via the wireless signal such that each average constellation energy for subcarries having indices of -8 to -1 and 1 to 8 deviates no more than +-4 dB from an overall average of the average constellation energies over subcarriers having indices of -8 to -1 and 1 to 8, and each average constellation energy for subcarries having indices of -13 to -9 and 9 to 13 deviates no more than +4/-6 dB from the overall average.

公开(公告)号：WO2013188030A2

公开(公告)日：2013-12-19

申请号：PCT/US2013040645

申请日：2013-05-10

Applicant: QUALCOMM INC

Inventor： YUCEK TEVFIK

IPC: H04W16/14

CPC classification number: H04W72/0453 ,  H04W16/14 ,  H04W74/002 ,  H04W74/0808

Abstract: Systems and methods of performing communication via television high throughput (TVHT) bandwidth channels are disclosed. Values of one or more physical layer parameters for use in communication via TVHT parameters are also defined. A short inter-frame spacing (SIFS) time is 120 microseconds (mus) for a 6 megahertz (MHz) or a 7 MHz bandwidth channel, and is 90 mus for an 8 MHz bandwidth channel. The parameters also include a clear channel assessment (CCA) time of 15 mus for a 6 MHz or 7 MHz bandwidth channel and 11.25 mus for an 8 MHz bandwidth channel. Additional parameters, such as compliance with a spectral flatness constraint, transmit center frequency tolerance, symbol clock frequency tolerance, transmitter center frequency leakage, transmitter constellation error, and non-HT duplicate transmission are also defined (e.g., for inclusion into a standard, such as Institute of Electrical and Electronics Engineers (IEEE) 802.11af).

Abstract translation: 公开了通过电视高吞吐量（TVHT）带宽信道进行通信的系统和方法。 还定义了用于通过TVHT参数进行通信的一个或多个物理层参数的值。 对于6兆赫（MHz）或7 MHz带宽通道，短帧间距（SIFS）时间为120微秒（mus），对于8 MHz带宽信道为90微秒。 这些参数还包括6 MHz或7 MHz带宽通道的清晰通道评估（CCA）时间为15 mus，8 MHz带宽通道为11.25 mus。 还定义了附加参数，例如符合光谱平坦度约束，发射中心频率容限，符号时钟频率容限，发射机中心频率泄漏，发射机星座误差和非HT重复传输（例如，为了包含在标准中 作为电气和电子工程师协会（IEEE）802.11af）。