Bin-hopping wavelet packet division multiple access (BH-WPDMA)

Abstract

Wavelet packet division multiple access (WPDMA) is a high capacity, flexible and robust orthogonal multiple access technique in which wavelet packet basis functions are chosen as the coding waveforms. By analogy with the frequency hopped communication scheme, incorporating the same technique into (WPDMA) schemes offers the potential for further performance improvements, especially for anti-jam communication and in frequency selective fading channels. We introduce bin-hopping wavelet packet division multiplexing (BH-WPDMA) schemes that exploit an efficient hopping structure. From the wavelet tree structured, it can be seen that once the scaling function and tree structures are chosen, all the basis functions are defined, therefore, we can "hop" the parameters of WPDMA. This structure provides performance and security improvement whilst retaining the capacity advantages and a number of desirable implementation features of WPDMA.