| This paper presents a multicarrier-2-Dimension-code division multiple access (MC-2D-CDMA) system for forward link.MC-2D-CDMA system utilizes fully the 2-Dimension spreading characteristic in both time and frequency domain and so is very flexible.Moreover,2-Dimension-Spreading enhances the capability of multiple access and anti-fading.We also present an Auxiliary-Vector Combination (AVC) receiver for MC-2D-CDMA system.AVC can be viewed as the combination of MRC and ORC and has great capability to reject both fading and MAI,but avoids their drawbacks.By simulation,we test its performance in many cases of system load under frequency selective fading channel.The results show the advantage of the proposed system and its receiver. |
