Radio apparatus

Details Radio apparatus Radio apparatus

2006-09-19

2009-06-23

Shah, Chirag G (Department: 2419)

Multiplex communications

Pathfinding or routing

Through a circuit switch

C370S510000

Reexamination Certificate

active

07551611

ABSTRACT:
A control unit produces a packet signal composed of a plurality of streams, based on a plurality of inputted data signals. For each of a plurality of data signals, a baseband processing unit multiplies the produced packet signal by a weight vector. The control unit appends a common known signal to a header portion of a plurality of data signals, and appends a dedicated known signal to a front part preceding a data signal by which a dedicated weight vector is to be multiplied, in the plurality of data signals. Of the produced packet signal, the baseband processing unit multiplies the dedicated known signal and a data signal assigned posterior to this dedicated known signal by the dedicated weight vector, and of the produced packet signal it multiplies a part by which no dedicated weight vector is to be multiplied, by a common weight vector.

REFERENCES:
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patent: 2003/0161384 (2003-08-01), Chun et al.
patent: 2003/0216156 (2003-11-01), Chun
patent: 2005/0163236 (2005-07-01), Hammerschmidt et al.
patent: 2006/0013327 (2006-01-01), Sugar et al.
patent: 2006/0182017 (2006-08-01), Hansen et al.
patent: 2006-179879 (2006-06-01), None
Sinem Coleri et al., “Channel Estimation Techniques Based on Pilot Arrangement in OFDM Systems,” IEEE Transactions on Broadcasting, Sep. 2002, pp. 223-229, vol. 48, No. 3.
“TGn Sync” An IEEE 802.11n Protocol Standard Proposal Alliance, Agere Systems, Inc. XP-002410959 International Search Report dated Jan. 17, 2007.

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