H04J13/12

Construction and application of an orthogonal code

The present invention provides a construction of an orthogonal code that includes an encoding matrix C.sub.K having N rows and N−P+1 columns, wherein N=P.Math.2.sup.K, K is a positive integer and P is an odd positive integer, wherein the encoding matrix CK having N rows and N−P+1 columns includes selecting a code word length, N, and factoring N to determine K and P, and wherein exactly one of the columns of the encoding matrix comprises N elements having the same real non-zero value; each of the other columns of the encoding matrix comprises exactly (N−L) elements having zero value and exactly L elements having real, non-zero, alternating positive and negative values of same magnitude wherein L∈{2.sup.K, 2.sup.K−1, . . . , 2.sup.2, 2.sup.1}, and wherein, for each column, elements of each of an adjacent pair of the L elements are separated by (N−L)/L elements having zero value; and no column is equal to another column.

Construction and application of an orthogonal code

The present invention provides a construction of an orthogonal code that includes an encoding matrix C.sub.K having N rows and N−P+1 columns, wherein N=P.Math.2.sup.K, K is a positive integer and P is an odd positive integer, wherein the encoding matrix CK having N rows and N−P+1 columns includes selecting a code word length, N, and factoring N to determine K and P, and wherein exactly one of the columns of the encoding matrix comprises N elements having the same real non-zero value; each of the other columns of the encoding matrix comprises exactly (N−L) elements having zero value and exactly L elements having real, non-zero, alternating positive and negative values of same magnitude wherein L∈{2.sup.K, 2.sup.K−1, . . . , 2.sup.2, 2.sup.1}, and wherein, for each column, elements of each of an adjacent pair of the L elements are separated by (N−L)/L elements having zero value; and no column is equal to another column.

Orthogonal sequence generation for multi-bit payloads

Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) or a base station, or both, may generate a set of orthogonal sequences that the UE may use to convey a payload of a number of bits based on a product of an orthogonal matrix and a cell-specific sequence. The UE or the base station, or both, may select a subset of the set of orthogonal sequences based on the number of bits in the payload, and the UE may construct a codebook including the subset of orthogonal sequences. The UE may select an orthogonal sequence from the constructed codebook based on the bits in the payload. The UE may transmit the payload including the number of bits to the base station using the selected orthogonal sequence.

Carrier interferometry transmitter
11575555 · 2023-02-07 · ·

A transmitter in a wireless communication network comprises a Carrier Interferometry (CI) coder and a multicarrier modulator communicatively coupled to the CI coder. The CI coder encodes a plurality of data symbols with a plurality of CI codes to produce a plurality of CI symbol values, wherein each of the plurality of CI symbol values equals a sum of information-modulated CI code chips. Each information-modulated CI code chip equals a CI code chip multiplied by one of the plurality of data symbols. The modulator modulates each CI symbol value onto a different subcarrier frequency to produce a multicarrier signal.

Waveform-coding for multicarrier wake up radio frame

Waveform-coding is applied to map successive on-off-keying (OOK) data bits onto successive multicarrier modulated symbols in time domain, wherein each multicarrier modulated symbol includes a set of sub-carriers in which alternating sub-carriers are set to non-zeros and zeros in frequency domain. The waveform coded multicarrier modulated symbols are up-converted to a carrier frequency to provide a data signal that is transmitted over a wireless channel.

Waveform-coding for multicarrier wake up radio frame

Waveform-coding is applied to map successive on-off-keying (OOK) data bits onto successive multicarrier modulated symbols in time domain, wherein each multicarrier modulated symbol includes a set of sub-carriers in which alternating sub-carriers are set to non-zeros and zeros in frequency domain. The waveform coded multicarrier modulated symbols are up-converted to a carrier frequency to provide a data signal that is transmitted over a wireless channel.

Data processing method and apparatus, device, storage medium, and processor
11489609 · 2022-11-01 · ·

Disclosed are a data processing method and apparatus, a device, a storage medium, and a processor. The data processing method includes: acquiring a first sequence, where the first sequence includes one of: a sequence obtained by processing a first specified element of a second sequence, or a sequence acquired from a first sequence set, and the first sequence set includes one of: a sequence set obtained by processing M sequence sets, or a preset first sequence set; and processing first data by using the first sequence, where M is an integer greater than or equal to 1.

Data processing method and apparatus, device, storage medium, and processor
11489609 · 2022-11-01 · ·

Disclosed are a data processing method and apparatus, a device, a storage medium, and a processor. The data processing method includes: acquiring a first sequence, where the first sequence includes one of: a sequence obtained by processing a first specified element of a second sequence, or a sequence acquired from a first sequence set, and the first sequence set includes one of: a sequence set obtained by processing M sequence sets, or a preset first sequence set; and processing first data by using the first sequence, where M is an integer greater than or equal to 1.

Spreading and precoding in OFDM
11646929 · 2023-05-09 · ·

A user equipment (UE) in a wireless network employs orthogonal polyphase codes for encoding data symbols to generate a set of coded data symbols, which are modulated onto Orthogonal Frequency Division Multiplex (OFDM) subcarrier frequencies assigned for use by the UE, and the resulting OFDM signal is transmitted to a base station in the wireless network. The orthogonal polyphase codes include pairs of orthogonal polyphase codes that are complex conjugates of each other.

Spreading and precoding in OFDM
11646929 · 2023-05-09 · ·

A user equipment (UE) in a wireless network employs orthogonal polyphase codes for encoding data symbols to generate a set of coded data symbols, which are modulated onto Orthogonal Frequency Division Multiplex (OFDM) subcarrier frequencies assigned for use by the UE, and the resulting OFDM signal is transmitted to a base station in the wireless network. The orthogonal polyphase codes include pairs of orthogonal polyphase codes that are complex conjugates of each other.