TY - JOUR
T1 - Resource allocation and rate gains in practical full-duplex systems
AU - Marašević, Jelena
AU - Zhou, Jin
AU - Krishnaswamy, Harish
AU - Zhong, Yuan
AU - Zussman, Gil
N1 - This research was supported in part by the NSF grant CNS-10-54856, DARPA RF-FPGA program HR0011-12-1-0006, and the People Programme (Marie Curie Actions) of the European Union''s Seventh Framework Programme (FP7/2007-2013) under REA grant agreement no[PIIF-GA-2013-629740].11.
PY - 2015/6/24
Y1 - 2015/6/24
N2 - Full-duplex communication has the potential to substantially increase the throughput in wireless networks. However, the benefits of full-duplex are still not well understood. In this paper, we characterize the full-duplex rate gains in both single-channel and multi-channel use cases. For the single-channel case, we quantify the rate gain as a function of the remaining self-interference and SNR values. We also provide a sufficient condition under which the sum of uplink and downlink rates on a full-duplex channel is concave in the transmission power levels. Building on these results, we consider the multi-channel case. For that case, we introduce a new realistic model of a small form-factor (e.g., smartphone) full-duplex receiver and demonstrate its accuracy via measurements. We study the problem of jointly allocating power levels to different channels and selecting the frequency of maximum self-interference suppression, where the objective is maximizing the sum of the rates over uplink and downlink OFDM channels. We develop a polynomial time algorithm which is nearly optimal under very mild restrictions. To reduce the running time, we develop an efficient nearly-optimal algorithm under the high SINR approximation. Finally, we demonstrate via numerical evaluations the capacity gains in the different use cases and obtain insights into the impact of the remaining self-interference and wireless channel states on the performance.
AB - Full-duplex communication has the potential to substantially increase the throughput in wireless networks. However, the benefits of full-duplex are still not well understood. In this paper, we characterize the full-duplex rate gains in both single-channel and multi-channel use cases. For the single-channel case, we quantify the rate gain as a function of the remaining self-interference and SNR values. We also provide a sufficient condition under which the sum of uplink and downlink rates on a full-duplex channel is concave in the transmission power levels. Building on these results, we consider the multi-channel case. For that case, we introduce a new realistic model of a small form-factor (e.g., smartphone) full-duplex receiver and demonstrate its accuracy via measurements. We study the problem of jointly allocating power levels to different channels and selecting the frequency of maximum self-interference suppression, where the objective is maximizing the sum of the rates over uplink and downlink OFDM channels. We develop a polynomial time algorithm which is nearly optimal under very mild restrictions. To reduce the running time, we develop an efficient nearly-optimal algorithm under the high SINR approximation. Finally, we demonstrate via numerical evaluations the capacity gains in the different use cases and obtain insights into the impact of the remaining self-interference and wireless channel states on the performance.
KW - Full-duplex
KW - Modeling
KW - Resource allocation
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U2 - 10.1145/2796314.2745872
DO - 10.1145/2796314.2745872
M3 - Conference article
AN - SCOPUS:84955580935
SN - 0163-5999
VL - 43
SP - 109
EP - 122
JO - Performance Evaluation Review
JF - Performance Evaluation Review
IS - 1
T2 - ACM SIGMETRICS International Conference on Measurement and Modeling of Computer Systems, SIGMETRICS 2015
Y2 - 15 June 2015 through 19 June 2015
ER -