Suppose, that in an attempt to increase range, cordless telephone manu- facturers double the power output of their transmitters. Assume, that in the cluttered in-house environment, power density is inversely propor- tional to the fourth power of distance. (a) Suppose the usable range, limited by signal strength without inter- ference, was 50 m before the power increase. What is it after the increase? (b) What effect will the power increase have on interference from other portable telephones? (i) operating at the old (low) power level? (ii) operating at the new (high) power level? (c) What can you conclude from your answer about the effect of in- creasing power in an environment where transmission range is lim- ited by (i) signal-to-noise ratio? (ii) signal-to-interference ratio?

Suppose, that in an attempt to increase range, cordless telephone manu- facturers double the power output of their transmitters. Assume, that in the cluttered in-house environment, power density is inversely propor- tional to the fourth power of distance. (a) Suppose the usable range, limited by signal strength without inter- ference, was 50 m before the power increase. What is it after the increase? (b) What effect will the power increase have on interference from other portable telephones? (i) operating at the old (low) power level? (ii) operating at the new (high) power level? (c) What can you conclude from your answer about the effect of in- creasing power in an environment where transmission range is lim- ited by (i) signal-to-noise ratio? (ii) signal-to-interference ratio?

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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