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Frequency Domain Equalization for OFDM systems with mapping of data onto subcarrier pairs and overlapping
 

Summary: 1
Frequency Domain Equalization for OFDM systems with
mapping of data onto subcarrier pairs and overlapping
symbol periods
Jean Armstrong*, Jinwen Shentu* and Chintha Tellambura
* La Trobe University, Victoria, Australia,
Monash University, Victoria, Australia
Description of Polynomial Cancellation Coded OFDM system
OFDM is the modulation method chosen for many high-speed digital communication systems. This is despite
OFDM having a number of well-known disadvantages that include extreme sensitivity to frequency offset, large
out-of-band power, and high peak-to-mean power ratio. One of the often-quoted advantages of OFDM is that by
using a cyclic prefix it can be made insensitive to multipath transmission. However this is at the cost of some
loss in bandwidth efficiency. One technique which has the potential to solve many of the problems of OFDM is
Polynomial Cancellation Coding (PCC) [1,2]. In PCC-OFDM the data to be transmitted is mapped onto
weighted groups of subcarriers rather than individual subcarriers.
( )tfj cr2exp -
( )tn
TRANSMITTER
Parallel
to Serial

  

Source: Armstrong, Jean - Department of Electrical and Computer Systems Engineering, Monash University

 

Collections: Engineering