Technical Requirements for Fixed Line-of-Sight Radio Systems Operating in the Band MHz

Transcription

1 Issue 6 December 2006 Spectrum Management and Telecommunications Standard Radio System Plan Technical Requirements for Fixed Line-of-Sight Radio Systems Operating in the Band MHz Aussi disponible en français - PNRH-307,7

2 Preface Issue 6 of has been released incorporate refinements the minimum antenna characteristics and emission limits. This SRSP replaces, Issue 5. Issued under the authority of the Minister of Industry R.W. McCaughern Direcr General Spectrum Engineering Branch ii

3 Contents 1. Intent General Related Documents Radio Arrangement Description Transmitter Characteristics Antenna Characteristics Maximum Equivalent Isotropically Radiated Power Avoidance of the Geostationary-satellite Orbit...6 iii

4 1. Intent 1.1 This Standard Radio System Plan (SRSP) states the minimum technical requirements for the efficient use of the band MHz by low, medium and high-capacity (LC, MC and HC) point--point radio systems in the fixed service using digital modulation. 1.2 This SRSP is intended be employed in the design and specification of radio systems and equipment, and in the evaluation of technical applications for new radio facilities or modification radio systems submitted in accordance with the current issue of Radio Standards Procedure 113, Application Procedures for Planned Radio Stations Above 960 MHz in the Fixed Service (RSP-113). 1.3 This SRSP specifies equipment characteristics relating efficient spectrum usage only and is not be regarded as a comprehensive specification for equipment design and/or selection. 2. General 2.1 This Standard replaces, Issue 5. Revision of this SRSP will be made as required. 2.2 Radio systems conforming these technical requirements will be given priority in licensing over non-standard radio systems operating in this band. 2.3 The arrangements for non-standard systems are outlined in Spectrum Utilization Policy, General Information Related Spectrum Utilization and Radio Systems Policies (SP Gen). 2.4 The Geographical Differences Policy (GDP) guideline applies in this frequency band. More information on the GDP can be found in SP 1-20 GHz Although a radio system may conform the requirements of this SRSP, modifications may be required that system whenever harmful interference 2 is caused. 2.6 When potential interference between radio systems cannot be resolved by the parties concerned, Industry Canada should be advised. After consultation with these parties, the Department will determine the necessary modifications and schedule of modifications resolve the conflict. 2.7 The Department may require licensees and/or applicants use receiver selectivity characteristics that provide rejection of harmful interference. 1 Spectrum Utilization Policy 1-20 GHz, Revisions Microwave Spectrum Utilization Policies in the Range of 1-20 GHz (SP 1-20 GHz), January 1995, contains spectrum utilization principles including the Geographical Differences Policy guideline. This information will be incorporated in a revision of SP Gen. 2 For the purpose of this SRSP, harmful interference means interference that endangers the functioning of a radionavigation service or other safety services or seriously degrades, obstructs, or repeatedly interrupts a radiocommunication service operating in accordance with regulations and technical requirements laid down by Industry Canada under the Radiocommunication Act. 1

5 2.8 The use of a two-frequency plan is required. Where reasonable economic or technical justification is provided (e.g. where siting prevents adequate antenna discrimination), extra frequencies may be used resolve the problem, subject the provisions of Section It should be noted that the fixed service shares this band with other services in accordance with the Canadian Table of Allocations 9 khz 275 GHz. 3. Related Documents The current issues of the following documents are applicable and available on the Spectrum Management and Telecommunications website at: SP 3-30 GHz SP 1-20 GHz SP Gen RSP-113 TRC-43 Revisions Spectrum Utilization Policies in the 3-30 GHz Range and Further Consultation Revisions Microwave Spectrum Utilization Policies in the Range of 1-20 GHz General Information Related Spectrum Utilization and Radio Systems Policies Application Procedures for Planned Radio Stations Above 960 MHz in the Fixed Service Notes Regarding Designation of Emission (Including Necessary Bandwidth and Classification), Class of Station and Nature of Service Canadian Table of Allocations 9 khz 275 GHz CPC Environmental Process, Radiofrequency Fields and Land-Use Consultation CPC Client Procedures Circular RSP Radio Standards Procedure SP Spectrum Utilization Policy TRC Telecommunications Regulation Circular 4. Radio Arrangement Description The radio frequency channel arrangements defined in this Standard provide for six different RF channel bandwidths. pairs are provided with a common transmit/receive separation of 300 MHz. See Table 3 for RF channel frequencies. 2

6 4.1 High-capacity (HC) Radio Arrangements MHz The centre frequencies of the 8 paired channels which allow RF channel bandwidths of 30 MHz are expressed by the following relationships: Lower half of the band A n = n for n = 1 8 Upper half of the band A' n = n for n = 1 8 where n is the channel number and A n and A' n are the centre frequencies in MHz of the paired channels MHz The centre frequencies of the 12 paired channels which allow RF channel bandwidths of 20 MHz are expressed by the following relationships: Lower half of the band B n = n for n = 1 12 Upper half of the band B' n = n for n = 1 12 where n is the channel number and B n and B' n are the centre frequencies in MHz of the paired channels. 4.2 Medium-capacity (MC) Radio Arrangements MHz The centre frequencies of the 25 paired channels which allow RF channel bandwidths of 10 MHz are expressed by the following relationships: Lower half of the band C n = n for n = 1 25 Upper half of the band C' n = n for n = 1 25 where n is the channel number and C n and C' n are the centre frequencies in MHz of the paired channels. 4.3 Low-capacity (LC) Radio Arrangements MHz The centre frequencies of the 50 paired channels which allow RF channel bandwidths of 5 MHz are expressed by the following relationships: Lower half of the band D n = n for n = 1 50 Upper half of the band D' n = n for n = 1 50 Where n is the channel number and D n and D' n are the centre frequencies in MHz of the paired channels. 3

7 MHz The centre frequencies of the 100 paired channels which allow RF channel bandwidths of 2.5 MHz are expressed by the following relationships: Lower half of the band E n = n for n = Upper half of the band E' n = n for n = Where n is the channel number and E n and E' n are the centre frequencies in MHz of the paired channels MHz The centre frequencies of the 200 paired channels which allow RF channel bandwidths of 1.25 MHz are expressed by the following relationships: Lower half of the band F n = n for n = Upper half of the band F' n = n for n = Where n is the channel number and F n and F' n are the centre frequencies in MHz of the paired channels. 4.4 Branching or Spur Route s The frequencies assigned a main route system should be re-used where possible on the branching or spur routes. The siting of repeater stations should be planned with this requirement in view, in order that sufficient antenna discrimination is obtained at the branch-off angle. 4.5 Closed Loops Systems must be designed so that any closed loop will consist of an even number of hops. 4.6 Assignment of Frequencies New systems using 10 MHz or smaller channel plans should use the lowest available frequency pair that can be successfully coordinated. New systems using the 20 MHz or 30 MHz channel plans should use the highest available frequency pair that can be successfully coordinated. 4.7 Spectral Efficiency High and medium-capacity digital systems submitted for licensing shall have a minimum spectral efficiency of 4.4 bits/s/hz of the RF channel bandwidth on a single polarization Low-capacity digital systems submitted for licensing shall have a minimum spectral efficiency of 2.4 bits/s/hz of the RF channel bandwidth on a single polarization. 4

8 4.8 Protection s One protection channel will normally be permitted for systems with more than one working channel Quad-path diversity applications will be considered on a hop-by-hop basis solve special propagation problems. 5. Transmitter Characteristics 5.1 The transmitter power delivered the antenna input should not exceed the limits per RF channel shown in Table 1 below. Table 1 Bandwidth Power Limit (MHz) (watts) (dbw) An increase in transmitter power over the above specified limit may be permitted if technical justification is provided. In no event will the power delivered the antenna input be permitted exceed 20 watts (+13 dbw) per channel. 5.3 The centre frequency of the emission shall be maintained within ±0.002% of the assigned frequency. 5.4 Emission Limits In any 4 khz band, the centre frequency of which is removed from the assigned frequency by more than 50% up and including 250% of the authorized bandwidth, the mean power of emission shall be attenuated below the mean output power of the transmitter in accordance with the following equation: A = (P B 50) + 10 log 10 B (db) Where: A = attenuation (db) below the mean output power level P = percent removed from the carrier frequency B = authorized bandwidth (MHz) 5

9 Note: 1. In no case shall the attenuation be less than 50 db. 2. Attenuation greater than 80 db or an absolute power of less than -13 dbm/mhz is not necessary In any 1 MHz band, the centre frequency of which is removed from the assigned frequency by more than 250% of the authorized bandwidth, the mean power of emission shall be attenuated by log 10 (mean output power in watts) db, or 80 db, whichever is the lesser attenuation. 6. Antenna Characteristics 6.1 The co-polarized radiation pattern envelope in the horizontal plane of the antenna must remain within Envelope A defined in Table 2 and shown in Figure 1, for both vertical and horizontal polarizations. 6.2 In uncongested areas, the co-polarized radiation pattern envelope in the horizontal plane of the antenna must remain within Envelope B defined in Table 2 and shown in Figure 1, for both vertical and horizontal polarizations. Table 2: Antenna Standards Envelope 0º 1.1º Minimum Radiation Suppression Angle in Degrees from Centreline of Main Beam (db) 1.1º 5º 5º 10º 10º 15º 15º 20º 20º 30º 30º 100º 100º 140º 140º 180º A B Maximum Equivalent Isotropically Radiated Power The maximum equivalent isotropically radiated power (e.i.r.p) from the antenna must not in any case exceed +55 dbw per RF channel. 8. Avoidance of the Geostationary-satellite Orbit Where practicable, sites for transmitting terrestrial stations in the fixed service, and employing maximum values of e.i.r.p exceeding +35 dbw in the frequency band MHz, should be selected so that the direction of maximum radiation of an antenna will be at least 2 o away from the geostationary-satellite orbit, taking in account the effect of atmospheric refraction. 6

10 0 Figure 1: Minimum Antenna Characteristics Band MHz Antenna Directivity db down from Main Lobe Scale Change Measured radiation pattern in the horizontal plane must be within these limits for vertical or horizontal polarizations Envelope B Envelope A Azimuth in Degrees from Main Lobe 7

11 Table 3: Identification and Carrier Frequencies for High, Medium and Low-capacity Radio Systems in the Lower 8 GHz Band GO (RETURN) s RETURN (GO) s E1 F E1' F1' D1 F D1' F2' E2 F E2' F3' C1 F C1' F4' E3 F E3' F5' D2 F D2' F6' E4 F E4' F7' B1 F B1' F8' E5 F E5' F9' D3 F D3' F10' E6 F E6' F11' A1 C2 F A1' C2' F12' E7 F E7' F13' D4 F D4' F14' E8 F E8' F15' F F16' E9 F E9' F17' D5 F D5' F18' E10 F E10' F19' C3 F C3' F20' E11 F E11' F21' D6 F D6' F22' E12 F E12' F23' B2 F B2' F24' E13 F E13' F25' D7 F D7' F26' E14 F E14' F27' C4 F C4' F28' E15 F E15' F29' D8 F D8' F30' E16 F E16' F31' F F32' E17 F E17' F33' D9 F D9' F34' E18 F E18' F35' A2 C5 F A2' C5' F36' E19 F E19' F37' D10 F D10' F38' E20 F E20' F39' B3 F B3' F40' E21 F E21' F41' D11 F D11' F42' E22 F E22' F43' C6 F C6' F44' E23 F E23' F45' D12 F D12' F46' E24 F E24' F47' F F48' 8

12 GO (RETURN) s RETURN (GO) s E25 F E25' F49' D13 F D13' F50' E26 F E26' F51' C7 F C7' F52' E27 F E27' F53' D14 F D14' F54' E28 F E28' F55' B4 F B4' F56' E29 F E29' F57' D15 F D15' F58' E30 F E30' F59' A3 C8 F A3' C8' F60' E31 F E31' F61' D16 F D16' F62' E32 F E32' F63' F F64' E33 F E33' F65' D17 F D17' F66' E34 F E34' F67' C9 F C9' F68' E35 F E35' F69' D18 F D18' F70' E36 F E36' F71' B5 F B5' F72' E37 F E37' F73' D19 F D19' F74' E38 F E38' F75' C10 F C10' F76' E39 F E39' F77' D20 F D20' F78' E40 F E40' F79' F F80' E41 F E41' F81' D21 F D21' F82' E42 F E42' F83' A4 C11 F A4' C11' F84' E43 F E43' F85' D22 F D22' F86' E44 F E44' F87' B6 F B6' F88' E45 F E45' F89' D23 F D23' F90' E46 F E46' F91' C12 F C12' F92' E47 F E47' F93' D24 F D24' F94' E48 F E48' F95' F F96' E49 F E49' F97' D25 F D25' F98' E50 F E50' F99' C13 F C13' F100' 9

13 GO (RETURN) s RETURN (GO) s E51 F E51' F101' D26 F D26' F102' E52 F E52' F103' B7 F B7' F104' E53 F E53' F105' D27 F D27' F106' E54 F E54' F107' A5 C14 F A5' C14' F108' E55 F E55' F109' D28 F D28' F110' E56 F E56' F111' F F112' E57 F E57' F113' D29 F D29' F114' E58 F E58' F115' C15 F C15' F116' E59 F E59' F117' D30 F D30' F118' E60 F E60' F119' B8 F B8' F120' E61 F E61' F121' D31 F D31' F122' E62 F E62' F123' C16 F C16' F124' E63 F E63' F125' D32 F D32' F126' E64 F E64' F127' F F128' E65 F E65' F129' D33 F D33' F130' E66 F E66' F131' A6 C17 F A6' C17' F132' E67 F E67' F133' D34 F D34' F134' E68 F E68' F135' B9 F B9' F136' E69 F E69' F137' D35 F D35' F138' E70 F E70' F139' C18 F C18' F140' E71 F E71' F141' D36 F D36' F142' E72 F E72' F143' F F144' E73 F E73' F145' D37 F D37' F146' E74 F E74' F147' C19 F C19' F148' E75 F E75' F149' D38 F D38' F150' E76 F E76' F151' B10 F B10' F152' 10

14 GO (RETURN) s RETURN (GO) s E77 F E77' F153' D39 F D39' F154' E78 F E78' F155' A7 C20 F A7' C20' F156' E79 F E79' F157' D40 F D40' F158' E80 F E80' F159' F F160' E81 F E81' F161' D41 F D41' F162' E82 F E82' F163' C21 F C21' F164' E83 F E83' F165' D42 F D42' F166' E84 F E84' F167' B11 F B11' F168' E85 F E85' F169' D43 F D43' F170' E86 F E86' F171' C22 F C22' F172' E87 F E87' F173' D44 F D44' F174' E88 F E88' F175' F F176' E89 F E89' F177' D45 F D45' F178' E90 F E90' F179' A8 C23 F A8' C23' F180' E91 F E91' F181' D46 F D46' F182' E92 F E92' F183' B12 F B12' F184' E93 F E93' F185' D47 F D47' F186' E94 F E94' F187' C24 F C24' F188' E95 F E95' F189' D48 F D48' F190' E96 F E96' F191' F F192' E97 F E97' F193' D49 F D49' F194' E98 F E98' F195' C25 F C25' F196' E99 F E99' F197' D50 F D50' F198' E100 F E100 F199' F F200' 11