US 2011/0212743 A1 · RADIO COMMUNICATION SYSTEM, RADIO COMMUNICATION METHOD, RADIO COMMUNICATION DEVICE, RECEPTION DEVICE, AND PROGRAM

Abstract

Each of first radio communication devices includes; a frequency spread unit which spreads frequency of a transmitted signal to generate a frequency-spread signal; and a mapping unit which allocates the frequency-spread signal to a subcarrier according to the mapping information which specifies a subcarrier. A second radio communication device includes: a demapping unit which extracts from a received signal a signal of the subcarrier specified by the mapping information; and an inverse frequency spread unit which inverse-frequency-spreads the extracted signal. The first radio communication device or the second radio communication device includes a use subcarrier decision unit that decides a subcarrier to which the frequency-spread-signal is allocated according to a communication path capacity of each subcarrier of each antenna used for transmission by the first radio communication devices and generates mapping information used to specify the decided subcarrier.

Claims11

Dependent claims

1-48. (canceled)

A radio communication system comprising a plurality of first communication devices each comprising a plurality of transmission antennas for transmitting a transmitted signal by converting the transmitted signal into a frequency spread signal and then allocating the frequency spread signal onto subcarriers, and a second communication device receiving the transmitted signal,

wherein subcarriers transmitted from the plurality of transmission antennas are independently determined when the subcarriers are allocated to the plurality of first communication devices.

Dependencies are inferred from the claim text.

Facts

Application

12/673,340Filed 13 Aug 2008

Priority

JP 2007-21093613 Aug 2007

Published

1 Sep 2011

Term ends

Not estimatedThe source records don’t support an estimate.

Classification18 codes

H04W 72/0453
Based on the type of the allocated resource: resources in frequency domain, e.g. a carrier in FDMA
H04L 5/0007
Time-frequency: the frequencies being orthogonal, e.g. OFDM or DMT
H04L 5/0026
Arrangements for dividing the transmission path: division using four or more dimensions, e.g. beam steering or quasi-co-location [QCL]
H04L 5/0037
Arrangements for allocating sub-channels of the transmission path: inter-user or inter-terminal allocation

Radio communication system, radio communication method, radio communication device, reception device, and program

Life of this patent

Radio communication system, radio communication method, radio communication device, reception device, and program

Life of this patent

Abstract

Claims11