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31. 发明公开

US20240137154A1 BIT SCRAMBLING FOR PROBABILISTIC CONSTELLATION SHAPING IN WLANS 审中-公开
公开(公告)号：US20240137154A1
公开(公告)日：2024-04-25
申请号：US18400461
申请日：2023-12-29
申请人： Qinghua Li , Hao Song , Danny Alexander , Shlomi Vituri , Assaf Gurevitz , Robert J. Stacey
发明人： Qinghua Li , Hao Song , Danny Alexander , Shlomi Vituri , Assaf Gurevitz , Robert J. Stacey
IPC分类号： H04L1/00 , H04L27/34 , H04W84/12
CPC分类号： H04L1/0063 , H04L1/0042 , H04L27/3483 , H04W84/12
摘要： A station (STA) configured for operation in a WLAN may perform bit scrambling on input bits to generate scrambled input bits and may perform probabilistic constellation shaping using a shaping encoder on the scrambled input bits. The shaping encoder may encode a segment of the scrambled input bits for a modulation order and generate a shaped bit stream. In these embodiments, the STA may generate a QAM symbol stream with a QAM modulator. The QAM symbol stream may be generated at least from the shaped bit stream and from parity bits using the modulation order. The STA may generate the parity bits from the shaped bit streams with a forward-error correction (FEC) encoder and may transmit the QAM symbol stream within a physical layer protocol data unit (PPDU). To address a potential byte boundary shift caused a decoding error at a receiving station, the STA may modify performance of the bit scrambling when probabilistic constellation shaping is performed.

32. 发明公开

US20240129174A1 UNEQUAL MODULATION AND CODING SCHEME FOR PROBABILISTIC CONSTELLATION SHAPING IN WLANS 审中-公开
公开(公告)号：US20240129174A1
公开(公告)日：2024-04-18
申请号：US18397940
申请日：2023-12-27
申请人： Qinghua Li , Hao Song , Juan Fang , Shlomi Vituri , Assaf Gurevitz , Danny Alexander , Robert J. Stacey
发明人： Qinghua Li , Hao Song , Juan Fang , Shlomi Vituri , Assaf Gurevitz , Danny Alexander , Robert J. Stacey
IPC分类号： H04L27/34 , H04L27/36
CPC分类号： H04L27/3405 , H04L27/36 , H04W84/12
摘要： A station (STA) configured for operation in a wireless local area network (WLAN) may implement an unequal Modulation and Coding Scheme (MCS) for Probabilistic Constellation Shaping using first and second shaping encoders. The first shaping encoder may encode a first segment of input bits for a first modulation order and generate a first shaped bit stream and the second shaping encoder may encode a second segment of input bits for a second modulation order to generate a second shaped bit stream. A first QAM symbol stream may be generated at least from the first shaped bit stream and from parity bits using the first modulation order and a second QAM symbol stream may be generated at least from the second shaped bit stream and from parity bits using the second modulation order. The STA may generate the parity bits from the first and second shaped bit streams with one or more LDPC encoders and may transmit the first and second QAM symbol streams within a PPDU.

33. 发明申请

US20210099249A1 CONSTELLATION SHAPING WITH FIXED-TO-FIXED SHAPING ENCODING 有权
公开(公告)号：US20210099249A1
公开(公告)日：2021-04-01
申请号：US17118587
申请日：2020-12-10
申请人： Qinghua Li , Xiaogang Chen , Assaf Gurevitz , Feng Jiang , Elad Meir , Shlomi Vituri , Yaron Yoffe
发明人： Qinghua Li , Xiaogang Chen , Assaf Gurevitz , Feng Jiang , Elad Meir , Shlomi Vituri , Yaron Yoffe
IPC分类号： H04L1/00 , H04L5/00 , H04W72/04
摘要： This disclosure describes systems, methods, and devices related to fixed-to-fixed shaping encoding. A device may determine a mapping table associated with uniformly distributed bits into amplitudes with desired probabilities. The device may predict a number of output bits for an input block. The device may apply padding as needed based on the predicted number of output bits.

34. 发明申请

US20210091991A1 ENHANCED CONSTELLATION SHAPING 有权
公开(公告)号：US20210091991A1
公开(公告)日：2021-03-25
申请号：US17112916
申请日：2020-12-04
申请人： Yaron Yoffe , Assaf Gurevitz , Elad Meir , Shlomi Vituri , Qinghua Li , Feng Jiang , Xiaogang Chen
发明人： Yaron Yoffe , Assaf Gurevitz , Elad Meir , Shlomi Vituri , Qinghua Li , Feng Jiang , Xiaogang Chen
IPC分类号： H04L27/34 , H04L25/03 , H04L27/26 , H04L1/00
摘要： This disclosure describes systems, methods, and devices related to enhanced constellation shaping. A device may generate payload bits associated with a frame to be sent to a first station device. The device may generate a first output bits having a first length based on the application of a first mask of one or more masks to the payload bits. The device may generate a second output bits having a second length based on the application of a second mask of the one or more masks. The device may compare the first length of the first output bits to the second length of the second output bits. The device may select the first mask or the second mask based on the comparison. The device may convert the payload bits using the selected mask before passing through a shaping encoder to generate shaped bits. The device may cause to send the frame bits and an indication of the selected mask to the first station device.

35. 发明申请

US20210091886A1 PEAK RATE ENHANCEMENT FOR CONSTELLATION SHAPING 有权
公开(公告)号：US20210091886A1
公开(公告)日：2021-03-25
申请号：US17110611
申请日：2020-12-03
申请人： Yaron Yoffe , Assaf Gurevitz , Elad Meir , Shlomi Vituri , Qinghua Li , Feng Jiang , Xiaogang Chen
发明人： Yaron Yoffe , Assaf Gurevitz , Elad Meir , Shlomi Vituri , Qinghua Li , Feng Jiang , Xiaogang Chen
IPC分类号： H04L1/00 , H04L27/04
摘要： This disclosure describes systems, methods, and devices related to enhanced constellation shaping. A device may generate payload bits associated with a frame, wherein the payload bits comprise a first portion and a second portion. The device may send the first portion of the payload bits through a shaping encoder. The device may generate shaped bits from the shaping encoder. The device may determine a number of amplitude bits based on the shaped bits. The device may generate parity bits from the shaped bits and the second portion going through an low-density parity-check (LDPC) encoder. The device may select sign bits comprising the second portion and a first subset of the parity bits. The device may send the amplitude bits with the sign bits to a modulator before transmitting the frame to a first station device.

36. 发明申请

US20200382139A1 OFDM PACKING AND LDPC FRAMING FOR CONSTELLATION SHAPING IN NG WLANS 审中-公开
公开(公告)号：US20200382139A1
公开(公告)日：2020-12-03
申请号：US16998528
申请日：2020-08-20
申请人： Yaron Yoffe , Assaf Gurevitz , Elad Meir , Shlomi Vituri , Qinghua Li , Xiaogang Chen , Feng Jiang
发明人： Yaron Yoffe , Assaf Gurevitz , Elad Meir , Shlomi Vituri , Qinghua Li , Xiaogang Chen , Feng Jiang
IPC分类号： H03M13/25 , H03M13/11 , H03M13/00 , H04L1/00 , H04L5/00
摘要： An apparatus for a station (STA) configured for operating in a next-generation (NG) wireless local area network (WLAN) comprises the processing circuitry configured to modify probabilities of constellation points to generate a more Gaussian distribution. In these embodiments, for LDPC framing and OFDM packing, the transmitter circuitry may be configured to compute a number of output bits (bout) to be transmitted based on a number of payload bits (bin) at an output of a shaping encoder, a shaping rate (rshaping), and an overhead percent (Boverhead). A shaping gain of up to 1.53 dB may be achieved. A new shaping encoder is provided to address the issue that the number of bits is not fixed.

37. 发明申请

US20190159207A1 ENHANCED TONE MAPPING FOR TRIGGER-BASED NULL DATA PACKET FEEDBACK 审中-公开
公开(公告)号：US20190159207A1
公开(公告)日：2019-05-23
申请号：US16251010
申请日：2019-01-17
申请人： Xiaogang Chen , Shlomi Vituri , Assaf Gurevitz , Qinghua Li , Feng Jiang
发明人： Xiaogang Chen , Shlomi Vituri , Assaf Gurevitz , Qinghua Li , Feng Jiang
IPC分类号： H04W72/04
CPC分类号： H04W72/0453 , H04L5/00 , H04L5/005 , H04L5/0053
摘要： This disclosure describes systems, methods, and devices related to tone mapping for a high-efficiency (HE) trigger-based (TB) null data packet (NDP) feedback physical layer protocol data unit (PPDU). A device may identify a frame received from a second device. The device may determine, based on the frame, a resource unit allocated to the device, wherein the resource unit is associated with a 20 MHz sub-channel of a bandwidth. The device may determine, based on the resource unit and the bandwidth, tones associated with a HE short training field (HE-STF) of a HE TB NDP feedback PPDU. The device may send the HE TB NDP feedback PPDU to the second device in the 20 MHz sub-channel, wherein the HE TB NDP feedback PPDU includes the tones.

38. 发明申请

US20170135046A1 TRANSMIT POWER CONTROL FOR UPLINK TRANSMISSIONS 审中-公开
公开(公告)号：US20170135046A1
公开(公告)日：2017-05-11
申请号：US15344227
申请日：2016-11-04
申请人： Ilan Sutskover , Laurent Cariou , Yaron Alpert , Uri Perlmutter , Assaf Gurevitz , Ziv Avital , Avi Mansour , Chittabrata Ghosh
发明人： Ilan Sutskover , Laurent Cariou , Yaron Alpert , Uri Perlmutter , Assaf Gurevitz , Ziv Avital , Avi Mansour , Chittabrata Ghosh
IPC分类号： H04W52/24 , H04L29/06 , H04B17/336 , H04W52/30 , H04W72/04
CPC分类号： H04W52/325 , H04W52/146 , H04W52/241 , H04W52/242 , H04W52/245 , H04W52/343 , H04W52/365 , H04W72/042 , H04W84/12
摘要： Methods, apparatuses, computer readable media for uplink transmission power control in a wireless network. An apparatus of a wireless device comprising processing circuitry is disclosed. The processing circuitry is configured to decode a trigger frame from an access point for an uplink communication, the trigger frame comprising an uplink resource allocation for the station, the uplink resource allocation including common information and per station information, the common information including an indication of a maximum receive power at the access point, the per station information comprising an identification of the station, and an indication of a resource unit (RU). The processing circuitry may be further configured to: encode an uplink (UL) physical layer convergence procedure (PLCP) protocol data unit (PPDU)(UL-PPDU) in accordance with the indication of the RU. The processing circuitry may be further configured to: determine a transmit power for the UL-PPDU based on the maximum receive power.

39. 发明授权

US07376117B2 Interleaving circuit for a multiband OFDM transceiver 有权
标题翻译：用于多频带OFDM收发器的交错电路
公开(公告)号：US07376117B2
公开(公告)日：2008-05-20
申请号：US10987191
申请日：2004-11-12
申请人： Yossi Erlich , Assaf Gurevitz
发明人： Yossi Erlich , Assaf Gurevitz
IPC分类号： H04J1/00
CPC分类号： H04L1/0071 , H03M13/271 , H03M13/275 , H03M13/276 , H04B1/71635 , H04L1/007 , H04L1/0072 , H04L1/04 , H04L27/2602
摘要： Interleaving circuit for a multiband OFDM (orthogonal frequency division multiplexing) transceiver of a ultra wide band wireless personal access network transmitting OFDM modulated symbols, wherein each OFDM symbol consists of a predetermined number (NCBPS) of encoded bits, said interleaving circuit comprising a symbol interleaving unit which receives an input bitstream of encoded bits and permutes adjacent bits of said input bitstream across different OFDM symbols; an intra-symbol tone interleaving unit which receives the bits permuted by said symbol interleaving unit and permutes adjacent bits of each OFDM symbol across uncorrelated data sub-carriers; and an intra-symbol cyclic shift unit which shifts cyclically NCBPS bits of each OFDM symbol in response to a shift value (K) which is changed between adjacent OFDM symbols.
摘要翻译：用于发射OFDM调制符号的超宽带无线个人接入网络的多频带OFDM（正交频分复用）收发机的交错电路，其中每个OFDM符号由编码比特的预定数目（N CBPS）组成所述交织电路包括符号交错单元，其接收编码比特的输入比特流，并且通过不同OFDM符号置换所述输入比特流的相邻比特; 符号间音调交错单元，其接收由所述符号交织单元置换的比特，并且跨越不相关的数据子载波排列每个OFDM符号的相邻比特; 以及符号间循环移位单元，其响应于在相邻OFDM符号之间改变的移位值（K）来循环移位每个OFDM符号的N个CBPS位。

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