4G prob­lem ar­eas

Electronics For You - - TECHNOLOGY -

Higher sus­cep­ti­bil­ity to in­ter-cell in­ter­fer­ence Higher vari­a­tion in the in­stan­ta­neous power (due to OFDM-based ar­chi­tec­ture) that im­pacts power am­pli­fier ef­fi­ciency In­com­pat­i­bil­ity with pre­vi­ous gen­er­a­tions Over 40 fre­quency bands make global roam­ing dif­fi­cult Poor voice sup­port High cost of em­brac­ing LTE, in­clud­ing high auc­tion costs for ac­quir­ing spec­trum, lack of econ­omy of scale to make avail­able rea­son­ably-priced user de­vices, and putting to­gether the back­haul in­fra­struc­ture 7. Need to set up newer op­er­a­tions and man­age­ment sys­tems, in­clud­ing pro­vi­sion­ing, per­for­mance op­ti­mi­sa­tion, rev­enue re­al­i­sa­tion, fault han­dling and main­te­nance, se­cu­rity man­age­ment, etc 1. 2. 3. 4. 5. 6.

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