In this paper, partial spread OFDM system has been presented and its performance has been studied when different
detection techniques are employed, such as minimum mean square error (MMSE), grouped Maximum Likelihood (ML)
and approximated integer quadratic programming (IQP) techniques . The performance study also includes applying two
different spreading matrices, Hadamard and Vandermonde. Extensive computer simulation have been implemented and
important results show that partial spread OFDM system improves the BER performance and the frequency diversity of
OFDM compared to both non spread and full spread systems. The results from this paper also show that partial spreading
technique combined with suboptimal detector could be a better solution for applications that require low receiver
complexity and high information detectability.