An analytical study of the cutoff conditions and the dispersion curves of a waveguide with a cross-sectional shape resembling an ellipse compressed along the minor axis
✍ Scribed by Vivek Singh; B. Prasad; S. P. Ojha
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 111 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
P3-code, with a value of ''0.'' The OIM checks the first and second inserting chip positions to match the corresponding chip positions of the P3-codes to find the available inserting position for P3-codes. OIM only needs one circle to find the inserting codes. On the other hand, RPM continues to search the inserting code recursively until it cannot find any inserting position within one circle, and this searching procedure will then stop. Therefore, OIM is more efficient than RPM in searching the inserting codes.
SIMULATION RESULTS
Taking the original P7-code system with the simultaneous Ž .w x user number of 7 NP7 s 7 1 , we can obtain the successful Ž number of P7-code from the total successful number of . 823543 for P7 versus the inserting number of P3-code, as shown in Figure 4. For example, VSM, PSM, RPM, and OIM can insert the number of inserting P3-code to be 2, 3, 4, and Ž . 15 into the simultaneous user number of P7-code being 7 with the successful number of 10 for the original P7-code system. According to the simulation results, the interference in PSM is more serious than other models. PSM can only Ž insert the number of inserting P3-code to be 2 by adding the number of inserting P3-code as 3 in the PSM, this multimedia . CDMA system will fail . On the other hand, the successful number of a P7-code system for inserting the number of Ž . P3-code being 3 in VSM is 1847.