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Subcarrier mapping techniques for guard interval-based orthogonal frequency division multiplexing communications

專利號
US11616671B1
公開日期
2023-03-28
申請人
QUALCOMM Incorporated(US CA San Diego)
發(fā)明人
Iyab Issam Sakhnini; Hemant Saggar; Tao Luo
IPC分類
H04L27/26; H04L5/00
技術(shù)領(lǐng)域
ofdm,matrix,gi,columns,may,symbol,manager,guard,or,samples
地域: CA CA San Diego

摘要

Methods, systems, and devices for wireless communications are described in which a user equipment (UE) or base station may generate orthogonal frequency division multiplexing (OFDM) symbols based on a permutation matrix (P) that permutes guard interval (GI) samples and data samples such that the OFDM symbols have power values across the symbols that are supportable by a transmitting device. The permutation matrix may map GI inputs to a subset of subcarriers for an OFDM communication, where the permutation matrix determined based at least in part on a first number of columns of a sub-matrix of a first matrix. The first matrix may be an inverse fast Fourier transform (IFFT) matrix, or may be a product of the IFFT matrix and a subcarrier mapping matrix. The first number of columns may correspond to a number of subcarriers that carry time-domain GI samples.

說明書

FIG. 3 illustrates an example of symbol structures for OFDM communications, including GI-based OFDM symbols that support subcarrier mapping techniques in accordance with aspects of the present disclosure.

FIG. 4 illustrates an example of an OFDM symbol generation technique that supports subcarrier mapping techniques for GI-based OFDM communications in accordance with aspects of the present disclosure.

FIGS. 5A, 5B, and 6 through 7 illustrate examples of unique word OFDM symbol generation that support subcarrier mapping techniques for GI-based OFDM communications in accordance with aspects of the present disclosure.

FIG. 8 illustrates an example of a process flow that supports subcarrier mapping techniques for GI-based OFDM communications in accordance with aspects of the present disclosure.

FIGS. 9 and 10 show block diagrams of devices that support subcarrier mapping techniques for GI-based OFDM communications in accordance with aspects of the present disclosure.

FIG. 11 shows a block diagram of a communications manager that supports subcarrier mapping techniques for GI-based OFDM communications in accordance with aspects of the present disclosure.

FIG. 12 shows a diagram of a system including a device that supports subcarrier mapping techniques for GI-based OFDM communications in accordance with aspects of the present disclosure.

權(quán)利要求

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