DocumentCode :
1716909
Title :
Throughput of a wireless cell using superposition based multiple-access with optimized scheduling
Author :
Schaepperle, Joerg
Author_Institution :
Alcatel-Lucent Bell Labs., Stuttgart, Germany
fYear :
2010
Firstpage :
212
Lastpage :
217
Abstract :
This paper studies the performance of a superposition based approach for multi-user access in the uplink of a wireless cell. The approach uses non-orthogonal signaling and multi-user detection on top of an orthogonal multiple-access method like OFDMA. Path losses depending on the distance between a terminal and the base station and cancellation errors during multi-user detection are taken into account. An optimized scheduling method is proposed and used for the capacity based throughput study. From the results recommendations for practical scheduling are derived. As a result, significant average throughput enhancements as well as improved cell-edge user throughput can be achieved compared to orthogonal multi-user access without increasing the number of antennas. The method can be realized as an extension of existing wireless standards like 3GPP LTE/LTE-Advanced or IEEE 802.16e/m / WiMAX.
Keywords :
OFDM modulation; cellular radio; frequency division multiple access; multiuser detection; 3GPP LTE-LTE-advanced; IEEE 802.16 WiMAX; OFDMA; base station; capacity based throughput study; improved cell-edge user throughput; multiuser access; multiuser detection; non-orthogonal signaling; optimized scheduling method; orthogonal multiple-access method; path losses; superposition based multiple-access; terminal station; wireless cell; Antennas; Base stations; Gain; Indexes; OFDM; Throughput; Wireless communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Personal Indoor and Mobile Radio Communications (PIMRC), 2010 IEEE 21st International Symposium on
Conference_Location :
Instanbul
Print_ISBN :
978-1-4244-8017-3
Type :
conf
DOI :
10.1109/PIMRC.2010.5671661
Filename :
5671661
Link To Document :
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