Evolution towards next generation wireless broadband communications challenges

In order to satisfy the requirements and expectations of the user to have more advanced wireless communication in mobile environments, this paper outlines the technical issues involved in Beyond Third Generation (B3G) mobile communications, High-Speed large capacity transmission capability is an essential requirement for B3G mobile communications for which we suggest VSF-OFCDM, SCS-MC-CDMA, OFDMA and IFDMA, efficient modulation demodulation techniques to achieve higher spectral utilization efficiency (such as combination of OFDM with CDMA, error control coding using LDPC codes); wireless multi-system terminals with End-to-End Reconfigurability. Frequency allocation (of Europe) is a major issue in the performance (how much date rate it can offer with available bandwidth) of wireless networks.