公开(公告)号：US08767795B2

公开(公告)日：2014-07-01

申请号：US13706811

申请日：2012-12-06

Applicant: Intel Corporation

Inventor： Yingming Tsai ,  Guodong Zhang ,  Jung-Lin Pan

IPC: H04B1/00

CPC classification number: H04L5/0007 ,  H04L5/0016 ,  H04L5/0037 ,  H04L5/0044 ,  H04L5/005 ,  H04L5/0073 ,  H04L27/2601 ,  H04L27/2647

Abstract: A hybrid orthogonal frequency division multiple access (OFDMA) wireless transmit/receive unit (WTRU) and method are disclosed. A WTRU includes a transmitter and a receiver. The receiver processes received data to recover data mapped to the subcarriers using OFDMA. The receiver recovers first input data by separating user data from multi-user spread data and recovers second input data from non-spread data.

Abstract translation: 公开了一种混合正交频分多址（OFDMA）无线发射/接收单元（WTRU）和方法。 WTRU包括发射机和接收机。 接收机处理接收到的数据以恢复使用OFDMA映射到子载波的数据。 接收机通过从多用户扩展数据分离用户数据并从非扩展数据中恢复第二输入数据来恢复第一输入数据。

公开(公告)号：US20170250772A1

公开(公告)日：2017-08-31

申请号：US15439492

申请日：2017-02-22

Applicant: INTEL CORPORATION

Inventor： Guodong ZHANG ,  Yingming TSAI ,  Jung-Lin Pan

IPC: H04N19/189 ,  H04L5/02

CPC classification number: H04B1/711 ,  H04L5/026 ,  H04L2025/03414

Abstract: An orthogonal frequency division multiplexing (OFDM)-code division multiple access (CDMA) system is disclosed. The system includes a transmitter and a receiver. At the transmitter, a spreading and subcarrier mapping unit spreads an input data symbol with a complex quadratic sequence code to generate a plurality of chips and maps each chip to one of a plurality of subcarriers. An inverse discrete Fourier transform is performed on the chips mapped to the subcarriers and a cyclic prefix (CP) is inserted to an OFDM frame. A parallel-to-serial converter converts the time-domain data into a serial data stream for transmission. At the receiver, a serial-to-parallel converter converts received data into multiple received data streams and the CP is removed from the received data. A discrete Fourier transform is performed on the received data streams and equalization is performed. A despreader despreads an output of the equalizer to recover the transmitted data.