Throughput of a wireless cell using superposition based multiple-access with non-ideal interference cancellation
| Autor: | Joerg Schaepperle |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Frequency-division multiple access
Orthogonal frequency-division multiplexing Computer science business.industry Orthogonal frequency-division multiple access Throughput Data_CODINGANDINFORMATIONTHEORY Space-division multiple access WiMAX Base station Single antenna interference cancellation Computer Science::Networking and Internet Architecture Wireless business Throughput (business) Computer Science::Information Theory Communication channel Computer network |
| Zdroj: | 2010 IEEE 21st International Symposium on Personal, Indoor and Mobile Radio Communications Workshops. |
| DOI: | 10.1109/pimrcw.2010.5670397 |
| Popis: | In current wireless standards like 3GPP LTE or IEEE 802.16 / WiMAX multiple access is based on orthogonal signalling using single-carrier frequency-division multiple access (SC-FDMA) or orthogonal frequency-division multiple access (OFDMA). Links between a base station and different terminals use mutually orthogonal radio resources. This paper studies potential gains in average cell throughput by using multiple-access based on non-orthogonal superposition on top of orthogonal multiple access taking into account different channel gains for different users and interference-cancellation errors. The study is done for a system with a single antenna both at the base station and the terminals. Multiple terminals share a single time-frequency resource and their signals are separated by successive interference cancellation or other kinds of joint detection. This could be called multi-user SISO (MU-SISO), because multiple users can be scheduled on a single time-frequency resource in a SISO system. Frequency flat non-fading channels with a pathloss according to a common model are assumed. Especially in the case where throughput with orthogonal multiple-access is limited by low cell-edge SNR significant throughput gains of more than 80 % can be expected. The method can be extended to multiple-antennas and used on top of space-division multiple access (SDMA). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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