[{"name":"R4-152135","title":"MTC Modulation schemes","source":"Sony Mobile Communications","contact":"Olof Zander","contact-id":57059,"tdoctype":"other","for":"Decision","abstract":"Observations 1: QPSK gives better PA efficiency than 16QAM. However, the efficiency improvement is not substantial. At least, it is not as substantial as when the modulation scheme is reduced further to p\/2 BPSK.\n\n\nObservations 2: Restricting the modulation scheme to QPSK forces MTC to use all of the allocated RB. The usage of 16 QAM can reduce the required RBs, thus increase the cell spectral efficiency.\n\nProposal 1: MTC to support QPSK and 16QAM for both uplink and downlink also to consider the usage of lower order modulations (e.g. p\/2 BPSK, GMSK).","secretary_remarks":"","agenda_item_sort_order":103,"ainumber":"7.7","ainame":"Further LTE Physical Layer Enhancements for MTC, [LTE_MTCe2_L1]","tdoc_agenda_sort_order":0,"status":"noted","reservation_date":"2015-04-09 15:42:59","uploaded":"2015-04-13 14:06:08","revisionof":"","revisedto":"","release":"","crspec":"","crspecversion":"","workitem":"","crnumber":"","crrevision":"","crcategory":"","tsg_crp":"","lsreplyto":"","lsto":"","Cc":"","lsoriginalls":"","lsreply":"","link":"http:\/\/www.3gpp.org\/ftp\/tsg_ran\/WG4_Radio\/TSGR4_74bis\/Docs\/R4-152135.zip","group":"R4","meeting":"R4-74","year":2015,"uicc_affected":null,"me_affected":null,"ran_affected":null,"cn_affected":null,"clauses_affected":null,"crsinpack":null,"crsinpacknumber":0}]