As cellular services become deeply rooted in people's daily life and more multimedia services are offered to larger audience, the access demand for high data rate is growing more rapidly than ever. Such demands are to be met with new wireless network technologies. This thesis explored resource allocation schemes under the scope of two different network structures, Time-Division Duplex Code-Division Multiple Access (TDD-CDMA) and Orthogonal Frequency Division Multiple Access (OFDMA). First phase of this thesis studied Multi-hop Cellular Networks (MCNs) under the structure of TDD-CDMA in measurements of both system performance and energy consumption. Two new resource allocation schemes, Multi-Medium MAC with Retransmission (mmMAC/RT) and Opportunistic MAC (OMAC), were proposed and showed significant improvement over traditional Packet Reservation Multiple Access (PRMA) and baseline protocol Multi-hop Multiple Access Control (mMAC).