US 8,787,496 B2Granted

Receiving method and apparatus, and communication system using the same

AssigneeSanyo Electric Co., Ltd.

InventorSeigo Nakao

Life of this patent

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Abstract

A radio unit receives burst signals in a target system or those in a MIMO system. A judgment unit determines if a MIMO signal having a form of channel corresponding to the target system is assigned posterior to a target LTS and a target signal. If a constellation of signal points in a position posterior to the target LTS and target signal corresponds to a constellation of signal points in a MIMO signal, the judgment unit judges that the MIMO signal is assigned in the received burst signal. If it is judged by the judgment unit that the MIMO signal was assigned, an instruction unit stops the operation of a baseband processing unit for MIMO-STS and the like assigned posterior to the MIMO signal.

Claims9

Dependent claims

A receiving apparatus, comprising:

a first receiver configured for receiving a first known signal which is in a format of a legacy system and communicated in a predetermined channel;
a processing unit configured for determining whether a control signal is assigned posterior to said first known signal or not,
wherein said control signal has a format compatible with the legacy system,
wherein said control signal is in a format of a MIMO system and is communicated in a plurality of channels into which the predetermined channel corresponding to the legacy system is spatially divided;
said receiving apparatus further comprising a second receiver configured for performing a reception operation for receiving a data signal which is assigned posterior to the first known signal and which is assigned in a channel corresponding to the legacy system, if said processing unit has determined that the control signal is not assigned;
and
wherein said processing unit is further configured for stopping said reception operation for MIMO-STS, MIMO-LTS, and data assigned posterior to the control signal before the reception of said signal is completed if said processing unit has determined that the control signal is assigned.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/588,038Filed 17 Aug 2012 · continuation
Priority: JP 2004-26391510 Sep 2004
Published: US 2013/0034192 A17 Feb 2013
Granted: 22 Jul 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H04B 7/0697
At the transmitting station: using spatial multiplexing
H04L 1/1664
Details of the supervisory signal: the supervisory signal being transmitted together with payload signals; piggybacking
H04L 27/2647
Multicarrier modulation systems: arrangements specific to the receiver only
H04B
Transmission

Family

Application11/222,221Parent of this continuation · filed 9 Sep 2005
US 2013/0034192 A1Pre-grant publication · published 7 Feb 2013
US 8,295,400 B2Parent of this continuation
US 2006/0056530 A1Published application
US 8,787,496 B2This patent

From the US filing history. Foreign family members aren’t listed.

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