Digital Radio-Relay Systems


image of Digital Radio-Relay Systems

This Handbook represents a comprehensive summary of basic principles, design parameters and current practices for the design and engineering of digital radio-relay systems.



Link design considerations

Digital radio-relay systems (DRRS) are used in many applications ranging from transporting telephone and TV signals to carrying a wide variety of modern data signals. Distances bridged may range from less than a kilometre to a continent or beyond. Similarly, the capacity of a digital radio system may be as little as a single DS1 signal (1.54 Mbit/s) or as large as 1 000 Mbit/s. Only a small range of the electromagnetic spectrum is suitable for radio-relay applications and within this range only a limited number of bands are available. The bands are further subdivided into channels that can carry either low capacity or high capacity digital signals.


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