Method and apparatus for transmission and reception within...

Details Method and apparatus for transmission and reception within... Method and apparatus for transmission and reception within...

2007-07-10

2007-07-10

Corrielus, Jean B. (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S295000, C370S491000, C370S500000

Reexamination Certificate

active

10945692

ABSTRACT:
In an OFDM system the same Walsh code is used at the same time for a plurality of transmitters. The multiple transmitters can be from the same, or different devices (e.g., different base stations on the downlink, different terminals on the uplink). Each subcarrier/antenna combination will share a similar pilot Walsh code, except for the fact that the scrambled spread pilot signals will be phase shifted on some subcarriers of some antennas, based on the subcarrier/antenna combination.

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Steiner, B.: “Time Domain Uplink Channel Estimation in Multicarrier-CDMA Mobile Radio System Concepts,” Multicarrier Spread Spectrum, Kluwer Academic Publishers, pp. 153-160, 1997.

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