Software radio-based OFDM transmitting and receiving machine able to upgrade
A software radio and transceiver technology, applied in the field of OFDM transceivers, can solve problems such as lack of effective communication, and achieve the effect of easy application and simple structure
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[0045] Example
[0046] 1) Transmission of user signals of new transceivers in broadband communities
[0047] When a mobile user MS with a new type of transceiver 3 And MS 2 When data is transmitted in a broadband cell, its coded and modulated symbol series b 3 And b 2 (Length is L b 3 , L b 2 ) Are respectively mapped to M 1 (01 1 , 0b 3 +L b 2 ≤M 1 ) In different subcarriers. After IFFT processing, the baseband output signal of the base station is
[0048] s l ( t ) = 1 T - T cp { Σ k = 0 ...
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