I/Q Imbalance Problem in SC-FDMA System with DCT and DFT Basis Functions

Table 1

Simulation parameters.

Parameter	Description
System bandwidth	5 MHz
modulation	QPSK
Cyclic prefix	20 symbols
	512
	128
I/Q imbalance scenarios	TX I/Q, RX I/Q, and TX-RX I/Q
Subcarriers mapping method	DFT-IFDMA, DFT-LFDMA, DCT-IFDMA, and DCT-LFDMA
Channel estimation	Perfect
Equalization	MMSE