✔ A (i) (c) (ii) (iii) こ (i). (ii) (iii) (iv) (v) Question Five (a) A certain city with a population of 1.2 million residents has an area of 1,800 km² and is covered by a cellular system using a 7-cell re-use pattern. Each cell has a radius of 4.5 km and the city is allocated 36 MHz of spectrum with full duplex channel bandwidth of 60 kHz. Assume a grade of service (GOS) or probability of blocking of 2 % for this system. If the offered traffic per user is 0.03 Erlangs, determine: the total number of cells; [3 Marks] the maximum carried traffic; [5 Marks] the total number of users that can be served for 2% GOS; [2 Marks] the market penetration of this cellular system. [2 marks] the theoretical maximum number of users that could be served at one time by the system. What percentage of the subscribers is this value? [3 Marks] Briefly explain the tradeoff in the use of abundant (many) overhead bytes for operation, administration and maintenance (OAM) functions in synchronous digital hierarchy (SDH). [2 Marks] (i) 63 Tributary unit-12 (TU-12) frames can be multiplexed into the synchronous transport modude-1 (STM-1) virtual container-4 (VC-4), leaving 2 wayside streams. Briefly explain the wayside streams. [2 marks] therese The (261 rows x 9 columns) VC-4 of the STM-1 frame comprises the path over-head (POH) and the container-4 (C-4). Briefly explain the function of C-4 and determine its (C-4) bit rate. [2 Marks] Total = 25 Marks (b) Briefly explain how adjacent channel interference in cellular systems can be minimized. [4 Marks] (ii) ~4~ збг Rr 2 2 3√₂ ( 415 ken) 2 52,61 le In comparison with the previous radio technologies, outline any four advanced features that 5G has. [4 Marks] 18 CS CamScanne The 5G network comprises the radio access network (RAN) and the core network. Briefly explain the function of the core network. [2 Marks] L mebell and nehmorta Total = 25 Marks 5261×1074545 52611 ћшч +)/ سال کا ما

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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Question

(a) A certain city with a population of 1.2 million residents has an area of 1,800 km² and is covered by a cellular system using a 7-cell re-use pattern. Each cell has a radius of 4.5 km and the city is allocated 36 MHz of spectrum with full duplex channel bandwidth of 60 kHz. Assume a grade of service (GOS) or probability of blocking of 2 % for this system. If the offered traffic per user is 0.03 Erlangs, determine:

(i)The total number of cells;

(ii) the maximum carried traffic;

(iii) the total number of users that can be served for 2% GOS;

(iv) the market penetration of this cellular system.

(v) the theoretical maximum number of users that could be served at one time by the system. What percentage of the subscribers is this value?