Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2008-02-19
2011-11-15
Mills, Donald (Department: 2462)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S208000
Reexamination Certificate
active
08059611
ABSTRACT:
A base station apparatus is used in a mobile communication system that uses an OFDM scheme in a downlink. The base station apparatus includes: a unit configured to perform inverse Fourier transform on a signal in which a first signal and a second signal is mapped to subcarriers with different transmission power density, and to generate a transmission signal; and a transmission unit configured to transmit the transmission signal to a user apparatus. A subcarrier (prohibited subcarrier) in which mapping of the second signal is prohibited is determined such that transmission power density of the second signal is kept constant among a plurality of OFDM symbols regardless of whether the first signal is included in an OFDM symbol including the second signal. The prohibited subcarrier is determined based on a subcarrier to which the first signal is mapped.
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Higuchi Kenichi
Ishii Hiroyuki
Mills Donald
NTT DoCoMo Inc.
Osha • Liang LLP
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