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ETTC'2003 - SEE

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the inverse of N×N correlation matrix is used to the linear multiuser detection. As to the<br />

asynchronous case, the order of the correlation matrix is MN, resulting heavy computation, where<br />

M is the message length, N is the number of active users.<br />

The mobile users<br />

transmit signal controlled<br />

by the inner timer and the<br />

users can transmit<br />

simultaneously. Because<br />

the difference of distance<br />

between the mobile user<br />

and the base station is very<br />

small, So the base station<br />

r(t) Matched<br />

Filter<br />

Bank<br />

Z=REb+n<br />

can receive the mobile users’ signal in a transmission delay τ kj

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