| Publisher | University of Plymouth | ||
|---|---|---|---|
| Format | 163.9KB PDF | Date added | 18 Jan 2001 |
| Topics | TDMA - CDMA | ||
| Downloads | 88 | ||
It is widely believed that the walsh code is the best to provide covering for a CDMA channel due to its orthogonality. However, it exhibits a severe aperiodic ACF and variation of its aperiodic ACF pattern for each code. Hence, the comparison of MAI performances of walsh sequence with other three Orthogonal sequences as a channel cover code in DS-CDMA was established. The aperiodic ACF and CCF that are directly correspondent with average system performance are examined. It is shown that walsh code has the worst among the others in term of aperiodic ACF and CCF. The average system performance is assessed by AIP-based computation and simulation based on Gaussian approximation method.
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