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VTC
2006
IEEE

Performance Comparison of OFDM-TDMA and OFDMA with Cross-Layer Consideration

14 years 14 days ago
Performance Comparison of OFDM-TDMA and OFDMA with Cross-Layer Consideration
— Performance comparison of multiuser OFDM-TDMA and OFDMA systems by considering physical and link cross-layer behavior is conducted in this work. We provide a new framework for performance evaluation that centers on “scheduling” with several different subcarrier/bit allocation schemes. The performance metrics include: the bit rate, the bit error rate (BER), packet throughput and delay. The instantaneous channel conditions of users are assumed to be available at the base station, which can be achieved by channel estimation at the mobile terminal (MT), and then fed back to the base station through a control channel. To perform the link layer comparison, we model the Rayleigh fading channel with a finite-state Markov chain, and adopt the M/G/1 queueing model as the analytical tool. Computer simulation is performed to verify conducted analytical results.
Yu-Jung Chang, Feng-Tsun Chien, C. C. Jay Kuo
Added 12 Jun 2010
Updated 12 Jun 2010
Type Conference
Year 2006
Where VTC
Authors Yu-Jung Chang, Feng-Tsun Chien, C. C. Jay Kuo
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