Orthogonal Frequency Division Multiplexing (OFDM)
O rthogonal F requency D ivision M ultiplexing ( OFDM ) is a multicarrier modulation technique. OFDM provides high bandwidth efficienc...
Rabu, 12 Januari 2011
Selasa, 11 Januari 2011
Using SC-FDMA in LTE
Single carrier frequency division multiple access (SC-FDMA) has been adopted by the third generation partnership project (3GPP) for u...
Minggu, 09 Januari 2011
Turbo-Decoder
The turbo code decoder is an iterative Maximum A posteriori (MAP) algorithm. MAP algorithms use a Bayesian analysis of the channel t...
Turbo-Encoder
Turbo code encoders are a concatenation of systematic encoders referred to as constituent codes. (Systematic encoders pass both uncod...
What's the Turbo-code ?
Turbo coding is a forward error correction (FEC) scheme. Iterative decoding is the key feature of turbo codes. Turbo codes consist...
Senin, 03 Januari 2011
Frequency Concepts in GSM
An MS communicates with a BTS by transmitting or receiving radio waves, which consist of electromagnetic energy. The frequency of a ra...
Messages in CDMA
I want to speak about messages in CDMA , how it sent and what the call processing ** In CDMA, most call processing events are driven by me...
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