A new FDTD surface impedance formalism to study PBG structures

✍ Scribed by M. Thèvenot; A. Reineix; B. Jecko

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 129 KB
• Volume: 18
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/(sici)1098-2760(19980620)18:3<203::aid-mop12>3.0.co;2-4

✦ Synopsis

where p denotes the transmitted signal power. The calcut lated BERs are used to compute the outage probability. For the BER requirement of BER -10 y5 , the outage probabilities for these two gymnasiums are also shown in Tables 1 and2. It is clearly seen that communication is not feasible in the gymnasiums, even if the transmission rate is as low as 2.5 Mbitsrs. System design requires a suitable method to prevent intersymbol interference, such as adaptive equalization, in order to obtain suitable communication quality.

IV. CONCLUSIONS

Wideband communication characteristics for two different geometrical configurations of gymnasiums at 57.5 GHz are presented. The impulse responses of the channels are computed by the SBRrimage method. It is found that the mean rms delay spread for the dome-shaped gymnasium is smaller than that for the rectangular-shaped gymnasium due to the ''focusing'' effect. Moreover, the mean rms delay spread is larger for the region near the center of both gymnasiums. In addition, the outage probabilities for BPSK communication systems with phase and timing recovery circuits have been calculated. It is found that communication is not feasible even if the transmission rate is as low as 2.5 Mbitsrs.