Multi-carrier communication device and peak power suppressing method
First Claim
1. A multi-carrier communication apparatus comprising:
- receiving means for receiving a multi-carrier signal mapped to subcarriers with a first symbol string including a first symbol with the amplitude of at least one of the in-phase component and quadrature component set to “
0”
; and
demapping means for demapping said multi-carrier signal to reception data.
1 Assignment
0 Petitions
Accused Products
Abstract
After digital modulation by digital modulation section 101, OFDM symbols (first OFDM symbol group) converted to parallel by S/P conversion section 102 are output to mapping section 103, where of a plurality of subcarriers on which the first OFDM symbol group is superimposed, the OFDM symbols superimposed on a predetermined number of subcarriers are set to “0” to expand thereby the OFDM symbol space. As many OFDM symbols as those of the first OFDM symbol group are selected in ascending order of peak power from among symbol patterns in this space, the first OFDM symbol group is associated with this selected OFDM symbol, this associated and selected OFDM symbol is output, this selected OFDM symbol is subjected to an inverse fast Fourier transform by IFFT section 104 and then transmitted.
33 Citations
56 Claims
-
1. A multi-carrier communication apparatus comprising:
-
receiving means for receiving a multi-carrier signal mapped to subcarriers with a first symbol string including a first symbol with the amplitude of at least one of the in-phase component and quadrature component set to “
0”
; and
demapping means for demapping said multi-carrier signal to reception data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 50, 51, 52, 53, 54, 55, 56)
-
-
16. A multi-carrier communication apparatus comprising:
-
mapping means for mapping data to be sent to subcarriers with a first symbol string including a first symbol with the amplitude of at least one of the in-phase component and the quadrature component set to “
0”
; and
transmitting means for transmitting mapped multi-carrier signals.
-
-
45. A communication terminal apparatus equipped with a multi-carrier communication apparatus, said multi-carrier communication apparatus comprising:
-
receiving means for receiving a multi-carrier signal mapped to subcarriers with a first symbol string including a first symbol with the amplitude of at least one of the in-phase component and quadrature component of the communication terminal apparatus set to “
0”
; and
demapping means for demapping said multi-carrier signal to reception data.
-
-
46. A base station apparatus equipped with a multi-carrier communication apparatus, said multi-carrier communication apparatus comprising:
-
receiving means for receiving a multi-carrier signal mapped to subcarriers with a first symbol string including a first symbol with the amplitude of at least one of the in-phase component and quadrature component of the communication terminal apparatus set to “
0”
; and
demapping means for demapping said multi-carrier signal to reception data.
-
-
47. A communication terminal apparatus equipped with a multi-carrier communication apparatus, said multi-carrier communication apparatus comprising:
-
mapping means for mapping data to be sent to subcarriers with a first symbol string including a first symbol with the amplitude of at least one of the in-phase component and quadrature component set to “
0”
; and
transmitting means for transmitting the mapped multi-carrier signal.
-
-
48. A base station apparatus equipped with a multi-carrier communication apparatus, said multi-carrier communication apparatus comprising:
-
mapping means for mapping data to be sent to subcarriers with a first symbol string including a first symbol with the amplitude of at least one of the in-phase component and quadrature component set to “
0”
; and
transmitting means for transmitting the mapped multi-carrier signal.
-
-
49. A peak power suppression method with the transmitter side comprising:
-
a mapping step of mapping data to be sent to subcarriers with a first symbol string including a first symbol; and
a transmitting step of transmitting the mapped multi-carrier signal, and the receiver side comprising;
a receiving step of receiving the multi-carrier signal mapped to a subcarrier with the first symbol string including said first symbol; and
a demapping step of demapping said multi-carrier signal to reception data.
-
Specification