Multi-User Interference Cancellation in Complementary Coded CDMA with Diversity Gain

Physical layer architectures for machine type communication networks—a survey

“…Different from traditional spreading sequences, the orthogonality of CCs is established based on a flock of element sequences. At transmitter side of a CC‐CDMA system, each user is assigned a flock of M element codes to spread its data and sent via different carriers or time slots independently. The receiver can use RAKE or chip‐matched filters to combine the signals from several sub‐channels to boost up signal‐to‐interference ratio before making decisions.…”

“…The proposed CDMA architecture based on orthogonal complete complementary codes carries the advantages with a high spreading efficiency and multiple access interference (MAI)‐free operation, offering a high bandwidth efficiency, which is very attractive to MTC applications. Moreover, analysed the performance of complementary‐coded code division multiple access (CC‐CDMA) systems in frequency‐selective fading channels. It was shown that combining algorithms and correlation properties of element sequences has a significant impact on the performance of CC‐CDMA systems in frequency‐selective fading channels.…”

An Adaptive Parallel Interference Mitigation Technique using Artificial Neural Network in Complementary Coded MC-CDMA

“…These neurons pass information and exchange message to each other. Particular numerical weights are assigned to each connection which can be changed to get the desired output depending upon the application [12] [13]. The multilayer perceptron model is described in Figure 1.…”

Multiple access interference and multipath interference analysis of orthogonal complementary code‐based ultra‐wideband systems over multipath channels

“…The orthogonality of OCC set is achieved by the complementation between the corresponding element codes. The studies of OCC have been discussed in numerous literatures . Chen et al .…”

“…The orthogonality of OCC set is achieved by the complementation between the corresponding element codes. The studies of OCC have been discussed in numerous literatures [18][19][20]. Chen et al proposed OCC-based code division multiple access (CDMA) system to eliminate MAI and MPI, and employed offset-stacking (OS) modulation scheme to achieve variable data rates [21][22][23][24][25].…”