ETTC'2003 - SEE
ETTC'2003 - SEE ETTC'2003 - SEE
the inverse of N×N correlation matrix is used to the linear multiuser detection. As to the asynchronous case, the order of the correlation matrix is MN, resulting heavy computation, where M is the message length, N is the number of active users. The mobile users transmit signal controlled by the inner timer and the users can transmit simultaneously. Because the difference of distance between the mobile user and the base station is very small, So the base station r(t) Matched Filter Bank Z=REb+n can receive the mobile users’ signal in a transmission delay τ kj
channel delay of kth user, ck ( t − τ k ) is the PN sequence of kth user, n(t) is an AGWN process with two-sided power spectral density No/2. Without loss generality , let 0 ≤ ≤τ ≤ ⋅⋅ ⋅ ≤τ
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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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