This paper considers receiver designs for

SC-FDE schemes (Single-Carrier with Frequency-Domain

Equalization) employing M-ary OQAM signals (Offset

Quadrature Amplitude Modulation). It is shown that the

interference between the in-phase (I) and quadrature (Q)

components at the sampling points can lead to severe

performance degradation. Therefore, receivers without

residual I-Q interference (IQI), as well as receivers with

IQI cancellation were developed. Our performance results

show that the new receivers are suitable to M-ary OQAM

schemes.