TY - JOUR
AU - Wu, Zhiqiang
AB - Future-generation wireless communication systems, designed to support very-high-rate data services, will require ultra-wide frequency bands. However, the frequency spectrum is a very scarce resource and has (for the most part) already been allocated to different entities in small blocks. No one entity owns a contiguous ultra-wide bandwidth. Hence, any company seeking to create ultra-wide bandwidth communications will need to construct a system that operates over non-contiguous frequency bands. In this paper, we extend the MC-CDMA and CI/MC-CDMA architectures such that they operate over non-adjacent frequency bands. In this way, the MC-CDMA and CI/MC-CDMA systems support ultra-wideband communications by operating over a large set of non-contiguous frequency bands, where each band may be either unlicenced or appropriately licensed. Furthermore, we ensure that these proposed systems (1) exploit the full diversity benefits available over non-adjacent bands, maximizing performance, and (2) exploit the total bandwidth to maximize network capacity, as measured by number of users (per cell). Simulation results over typical multi-path fading channels confirm that these proposed systems not only support ultra-wideband communications over non-contiguous frequency bands, but outperforms similar systems over contiguous frequency bands (as a direct result of larger frequency diversity available).
TI - Ultra wideband MC-CDMA and CI/MC-CDMA systems
JF - Proceedings of SPIE
DO - 10.1117/12.455395
DA - 2002-11-01
UR - https://www.deepdyve.com/lp/spie/ultra-wideband-mc-cdma-and-ci-mc-cdma-systems-svn39cmGSi
SP - 54
EP - 61
VL - 4869
IS - 1
DP - DeepDyve
ER -