A2-13 A2-14 The horizontal gain simulating scheme The vertical gain simulating scheme Table A2-2 gives the antenna isolation space for VHF applications. TABLE A2-2 Receiving Interference Horizontal Radiant power Isolation Vertical space sensitivity rejection index space (W) (dB) (m) (dBm) (dB) (m) 25 100 51 79.18 5.30 −98 100 42 28.09 3.14 −107 50 100 49 62.97 4.72 −103 100 45 39.73 3.74 −107 Annex 3 Study from Canada for channel plan A, B and C The attachment is a study on impacts relating to plans A, B and C for VDE and AIS systems as well as the differences between each plan. Channel plan D was not developed when this study was completed; therefore plan D was not considered. This study discusses options on various technologies to mitigate interference and provides scenarios on specific communications under the proposed plans A, B and C. It provides recommendations in the attempt to optimize frequency allocation for maritime communications in the VHF band. It was determined that, for each channel plan, compromises are required in terms of, but not limited to, integration of VDES and AIS communications, antenna separation and filtering and site selection.
A2-13 The horizontal gain simulating scheme A2-14 The vertical gain simulating scheme Table A2-2 gives the antenna isolation space for VHF applications. TABLE A2-2 Radiant power (W) Receiving sensitivity (dBm) Interference rejection index (dB) Isolation (dB) Horizontal space (m) Vertical space (m) 25 −98 100 51 79.18 5.30 −107 100 42 28.09 3.14 50 −103 100 49 62.97 4.72 −107 100 45 39.73 3.74 Annex 3 Study from Canada for channel plan A, B and C The attachment is a study on impacts relating to plans A, B and C for VDE and AIS systems as well as the differences between each plan. Channel plan D was not developed when this study was completed; therefore plan D was not considered. This study discusses options on various technologies to mitigate interference and provides scenarios on specific communications under the proposed plans A, B and C. It provides recommendations in the attempt to optimize frequency allocation for maritime communications in the VHF band. It was determined that, for each channel plan, compromises are required in terms of, but not limited to, integration of VDES and AIS communications, antenna separation and filtering and site selection.
R-REP-M.2371-2015-MSW-E.docx