Scalable spectrum CDMA communication systems and methods...

Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train

Reexamination Certificate

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C375S130000, C375S140000, C375S146000, C370S208000, C370S210000, C370S335000, C370S342000, C370S441000, C370S536000

Reexamination Certificate

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08081686

ABSTRACT:
At least a portion of a total spectrum bandwidth of a wireless system may be allocated to each of a plurality of users by assigning at least one unique spreading code to each of the plurality of users. At least two of the plurality of users may have different spectrum capabilities and may transmit simultaneously. Each of the assigned spreading codes may have a different code length. The number and/or the code length of the spreading codes assigned to each user may be indicative of a portion of the total spectrum bandwidth allocated to each user.

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