Method and apparatus for allocating channelization codes for...

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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Details

C375S260000, C455S132000, C455S522000, C455S130000

Reexamination Certificate

active

07372912

ABSTRACT:
A data transmission method for a MIMO (Multiple-input Multiple-Output) system allowing multiple terminals to share channelization codes according to the channel states, by receiving channel information from terminals, allocating channelization codes for each transmit antenna based upon the received channel information, and transmitting data via each transmit antenna according to the allocated channelization codes. When there are many user terminals and if the number of channelization codes are limited, namely, when the total number of channel codes used to distinguish the terminals is less than the total number of terminals, channelization code sharing per transmit antenna among multiple terminals is performed, such that the throughput of data that can be sent by using each channelization code is increased.

REFERENCES:
patent: 6662024 (2003-12-01), Walton et al.
patent: 6741587 (2004-05-01), Holma et al.
patent: 6785250 (2004-08-01), Vayanos et al.
patent: 2001/0053143 (2001-12-01), Ye et al.
patent: 2002/0136327 (2002-09-01), Hesham et al.
patent: 2003/0013468 (2003-01-01), Khatri

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