Mobile radio propagation in British cities at frequencies in the v.h.f. and u.h.f. bands /
Measurements of the received signal envelope magnitude have been made in three British cities at frequencies of 85.875, 167.2 and 441.025 MHz. In all cases unmodulated carrier waves were radiated from aerials atop tall buildings, or prominent terrain features, and detected using a vehicle-mounted re...
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| author | 264530 Allsebrook, K. Parsons, J. D. (John David) |
| author_facet | 264530 Allsebrook, K. Parsons, J. D. (John David) |
| author_sort | 264530 Allsebrook, K. |
| collection | OCEAN |
| description | Measurements of the received signal envelope magnitude have been made in three British cities at frequencies of 85.875, 167.2 and 441.025 MHz. In all cases unmodulated carrier waves were radiated from aerials atop tall buildings, or prominent terrain features, and detected using a vehicle-mounted receiver. These measurements have provided the basis for an analysis of the factors affecting the transmission loss in urban/suburban areas which, in turn, has enabled a propagation prediction model to be constructed. Close aggrement between measured and predicted path losses has been found for the various terrains investigated. The statistical prediction errors produced by the proposed model for the three British cities analysed are shown to be similar inmagnitude to those obtained using an extrapolation of the Okumura method. Because the proposed model is much less complex and procedurally simpler, it is recommended for use, in the first instance, in British cities. |
| first_indexed | 2024-03-04T15:14:29Z |
| format | |
| id | KOHA-OAI-TEST:55293 |
| institution | Universiti Teknologi Malaysia - OCEAN |
| last_indexed | 2024-03-04T15:14:29Z |
| record_format | dspace |
| spelling | KOHA-OAI-TEST:552932020-12-19T16:58:54ZMobile radio propagation in British cities at frequencies in the v.h.f. and u.h.f. bands / 264530 Allsebrook, K. Parsons, J. D. (John David) Measurements of the received signal envelope magnitude have been made in three British cities at frequencies of 85.875, 167.2 and 441.025 MHz. In all cases unmodulated carrier waves were radiated from aerials atop tall buildings, or prominent terrain features, and detected using a vehicle-mounted receiver. These measurements have provided the basis for an analysis of the factors affecting the transmission loss in urban/suburban areas which, in turn, has enabled a propagation prediction model to be constructed. Close aggrement between measured and predicted path losses has been found for the various terrains investigated. The statistical prediction errors produced by the proposed model for the three British cities analysed are shown to be similar inmagnitude to those obtained using an extrapolation of the Okumura method. Because the proposed model is much less complex and procedurally simpler, it is recommended for use, in the first instance, in British cities.Measurements of the received signal envelope magnitude have been made in three British cities at frequencies of 85.875, 167.2 and 441.025 MHz. In all cases unmodulated carrier waves were radiated from aerials atop tall buildings, or prominent terrain features, and detected using a vehicle-mounted receiver. These measurements have provided the basis for an analysis of the factors affecting the transmission loss in urban/suburban areas which, in turn, has enabled a propagation prediction model to be constructed. Close aggrement between measured and predicted path losses has been found for the various terrains investigated. The statistical prediction errors produced by the proposed model for the three British cities analysed are shown to be similar inmagnitude to those obtained using an extrapolation of the Okumura method. Because the proposed model is much less complex and procedurally simpler, it is recommended for use, in the first instance, in British cities.12PSZJBLMobile communication systemsRadio wave propagation |
| spellingShingle | Mobile communication systems Radio wave propagation 264530 Allsebrook, K. Parsons, J. D. (John David) Mobile radio propagation in British cities at frequencies in the v.h.f. and u.h.f. bands / |
| title | Mobile radio propagation in British cities at frequencies in the v.h.f. and u.h.f. bands / |
| title_full | Mobile radio propagation in British cities at frequencies in the v.h.f. and u.h.f. bands / |
| title_fullStr | Mobile radio propagation in British cities at frequencies in the v.h.f. and u.h.f. bands / |
| title_full_unstemmed | Mobile radio propagation in British cities at frequencies in the v.h.f. and u.h.f. bands / |
| title_short | Mobile radio propagation in British cities at frequencies in the v.h.f. and u.h.f. bands / |
| title_sort | mobile radio propagation in british cities at frequencies in the v h f and u h f bands |
| topic | Mobile communication systems Radio wave propagation |
| work_keys_str_mv | AT 264530allsebrookk mobileradiopropagationinbritishcitiesatfrequenciesinthevhfanduhfbands AT parsonsjdjohndavid mobileradiopropagationinbritishcitiesatfrequenciesinthevhfanduhfbands |