Orthogonal frequency division multiplexing transmission system and transmitter and receiver therefor
T Seki, N Taga, S Okita, T Ishikawa - US Patent 5,771,224, 1998 - Google Patents
BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a
radio communication system employing an orthogonal frequency division multiplexing …
radio communication system employing an orthogonal frequency division multiplexing …
Wireless internet access system and method
M Barton, JC Liberti - US Patent 7,433,297, 2008 - Google Patents
A wireless Internet access system and method supports the transmission and reception of
multiple types of traffic between mobile subscriber units and existing networks. A frame …
multiple types of traffic between mobile subscriber units and existing networks. A frame …
OFDM receiving system
S Ma, D Young, JL Ma - US Patent 6,151,295, 2000 - Google Patents
A method of frame synchronization for OFDM point-to-multipoint channels is provided
according to a first aspect of the invention, wherein sequences of reference frames are …
according to a first aspect of the invention, wherein sequences of reference frames are …
带内同频道数字音频广播关键技术进展
于云华， 刘扬， 石寅 - 电子与信息学报, 2003 - jeit.ac.cn
基于编码正交频分复用的数字音频广播(DAB) 具有鲁棒性高和激光唱盘(CD) 音质等优良性能.
带内同频道(IBOC) 制式的DAB 能够在已有的模拟广播频道内同播模拟和数字两种信号 …
带内同频道(IBOC) 制式的DAB 能够在已有的模拟广播频道内同播模拟和数字两种信号 …
OFDM transmission/reception apparatus
H Sudo - US Patent 7,106,689, 2006 - Google Patents
Modulation section 201 performs modulation processing on transmission data. Mapping
control section 202 controls mapping of the baseband signal onto the Subcarriers so that the …
control section 202 controls mapping of the baseband signal onto the Subcarriers so that the …
OFDM transmission/reception apparatus
H Sudo - US Patent 7,558,190, 2009 - Google Patents
Modulation section 201 performs modulation processing on transmission data. Mapping
control section 202 controls mapping of the baseband signal onto the subcarriers so that the …
control section 202 controls mapping of the baseband signal onto the subcarriers so that the …
Circuit array and method for creating a data feedback channel from receiver to transmitter in a common frequency network
M Zumkeller - US Patent 6,178,175, 2001 - Google Patents
The establishment of an interactive broadcasting network requires not only a transmission
channel from transmitter to receiver but also a transmission channel from receiver to …
channel from transmitter to receiver but also a transmission channel from receiver to …
OFDM-CDMA equipment and method
H Sudo - US Patent 10,193,726, 2019 - Google Patents
An OFDM signal transmission apparatus is provided, which includes a mapping unit
configured to map first signals into N subcarriers and second signals into M subcarrier (s) to …
configured to map first signals into N subcarriers and second signals into M subcarrier (s) to …
OFDM-CDMA equipment and method
H Sudo - US Patent 9,780,982, 2017 - Google Patents
An OFDM signal transmission apparatus is provided, which includes a mapping unit
configured to map first signals into N subcarriers and second signals into M subcarrier (s) to …
configured to map first signals into N subcarriers and second signals into M subcarrier (s) to …
OFDM-CDMA equipment and method
H Sudo - US Patent 9,270,511, 2016 - Google Patents
Related US Application Data continuation of application No. 13/445.746, filed on Apr. 12,
2012, now Pat. No. 8,526,297, which is a continuation of application No. 12/481,485, filed on …
2012, now Pat. No. 8,526,297, which is a continuation of application No. 12/481,485, filed on …