Receiver design for multicarrier CDMA using frequency-domain oversampling |
| |
Authors: | Shi Q. Guan Y.L. Gong Y. Law C.L. |
| |
Affiliation: | Positioning and Wireless Technology Centre, Nanyang Technological University, Singapore; |
| |
Abstract: | Based on the frequency-domain oversampling and minimum mean-square error (MMSE) principles, we propose three linear single-user detectors for downlink multicarrier codedivision multiple-access (MC-CDMA) systems. We begin with an optimal linear MMSE detector, which is computationally demanding. To reduce the complexity, a two-stage MMSE detector and a diagonal one-stage MMSE detector are developed subsequently. Simulation results show that the proposed detectors can efficiently suppress the multiple access interference (MAI) caused by frequency-selective fading, near-far effect, frequency offset, and nonlinear power amplification. |
| |
Keywords: | |
|
|