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公开(公告)号：US09571314B1
公开(公告)日：2017-02-14
申请号：US14863418
申请日：2015-09-23
Applicant: QUALCOMM Incorporated
Inventor： Yu-Han Yang , RaviKiran Gopalan , Markos Troulis , Seyed Mohammad Ehsan Hosseini
IPC: H04B1/7093 , H04L27/14 , H04L27/12 , H04L27/38
CPC classification number: H04L27/14 , H04L27/12 , H04L27/2017 , H04L27/3872
Abstract: A method for wireless communication is described. The method includes receiving a signal that is pattern-mapped and Gaussian frequency-shift keying (GFSK) modulated. The method also includes performing a joint demapping and demodulation of the received signal based on a stored accumulated phase. The method may further include updating the stored accumulated phase based on the joint demapping and demodulation.
Abstract translation: 描述了一种用于无线通信的方法。 该方法包括接收模式映射和高斯频移键控（GFSK）调制的信号。 该方法还包括基于存储的累积相位执行对接收信号的联合解映射和解调。 该方法还可以包括基于联合解映射和解调来更新存储的累积相位。
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公开(公告)号：US20190273573A1
公开(公告)日：2019-09-05
申请号：US16271316
申请日：2019-02-08
Applicant: QUALCOMM Incorporated
Inventor： Seyed Mohammad Ehsan Hosseini , Koorosh Akhavan
IPC: H04L1/00
Abstract: A device (e.g., a wireless device) may obtain a set of encoded bits, and select a set of symbol locations for puncturing. The device may then obtain and transmit modulated symbols based on the puncturing. For example, the device may encode information bits according to a convolutional code rate. In some cases, the encoded bits may be punctured (e.g., via a puncturing matrix with each column including either all 1's or all 0's) and the set of punctured bits may be mapped to symbols. In other cases, the encoded bits may be mapped to symbols, and the symbols may be punctured (e.g., via a puncturing matrix). The puncturing matrix may be identified based on a desired punctured code rate, the convolutional code rate used to encode the information bits, and whether or not the puncturing is to be applied before or after symbol mapping.
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公开(公告)号：US11330468B2
公开(公告)日：2022-05-10
申请号：US16832425
申请日：2020-03-27
Applicant: QUALCOMM Incorporated
Inventor： Seyed Mohammad Ehsan Hosseini , Le Nguyen Luong , Eunmo Kang , Dongsik Kim
Abstract: This disclosure provides systems, devices, apparatus, and methods, including computer programs encoded on storage media, related to low power techniques for a BLE device during a scanning state. The BLE device is configured to scan for a preamble of a packet while in a first power mode and detect when a bit of the preamble is received. Upon detecting that the bit of the preamble is received, the BLE device switches from the first power mode to a second power having a higher operating power for the BLE device than the first power mode. The switch in power modes occurs while the preamble is being received or immediately after the preamble is received and before an access address of the packet is received. The BLE device, while in the second power mode, then scans for the access address of the packet.
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