公开(公告)号：US20030152023A1

公开(公告)日：2003-08-14

申请号：US10060502

申请日：2002-01-30

Applicant: TEXAS INSTRUMENTS INCORPORATION

Inventor： Srinath Hosur ,  Dennis Rauschmayer

IPC: H04J011/00 ,  H04B007/216

CPC classification number: H04L27/2602

Abstract: A wireless transmitter (TX1). The transmitter comprises circuitry for providing a plurality of control (CONTROL) bits and circuitry for providing a plurality of user (USER) bits. The transmitter also comprises circuitry for modulating (16) the plurality of control bits and the plurality of user bits into a stream of complex symbols and circuitry (18) for converting the stream of complex symbols into a parallel plurality of complex symbol streams. The transmitter also comprises circuitry (20) for performing an inverse fast Fourier transform on the parallel plurality of complex symbol streams to form a parallel plurality of OFDM symbols and circuitry (22) for converting the parallel plurality of OFDM symbols into a serial stream of OFDM symbols. Each OFDM symbol in the serial stream of OFDM symbols comprises a plurality of data points, and selected (SF2.x) OFDM symbols in the serial stream of OFDM symbols carry modulation information (AMOD). The modulation information in one or more of the selected OFDM symbols comprises a plurality of modulation groups, and the plurality of modulation groups comprises a number of modulation parameters that describe modulation of a corresponding set of data points in a subsequent OFDM symbol in the serial stream of OFDM symbols.

Abstract translation: 无线发射机（TX1）。 发射机包括用于提供多个控制（CONTROL）比特和用于提供多个用户（USER）比特）的电路的电路。 所述发射机还包括用于将所述多个控制比特和所述多个用户比特调制（16）为复数符号流和电路（18）的电路，用于将复符号流转换为并行多个复符号流。 发射机还包括用于对并行多个复符号流执行快速傅立叶逆变换的电路（20），以形成并行多个OFDM符号和电路（22），用于将并行多个OFDM符号转换成OFDM的串行流 符号。 OFDM符号的串行流中的每个OFDM符号包括多个数据点，并且在OFDM符号的串行流中选择的（SF2.x）OFDM符号携带调制信息（AMOD）。 所选择的OFDM符号中的一个或多个中的调制信息包括多个调制组，并且所述多个调制组包括多个调制参数，所述调制参数描述在串行流中随后的OFDM符号中对应的一组数据点的调制 的OFDM符号。