A Tight Upper Bound on Bit Error Rate of Joint OFDM and Multi-Carrier Index Keying
A Tight Upper Bound on Bit Error Rate of Joint OFDM and Multi-Carrier Index Keying
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DOI：
10.1109/lcomm.2014.2347280
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发表时间：
2014-08
期刊：
影响因子：
--
通讯作者：
Y. Ko
中科院分区：
文献类型：
--
作者：
Y. Ko
本文研究了正交频分复用（OFDM）系统中多载波索引键控的性能增强。为了进行性能评估，推导了误码率（BER）的严密封闭近似，引入了在多载波主动索引检测不完善和完美的情况下，索引域和复域出现的误码率的表达式。通过仿真验证了所得误码率结果在各种情况下的精度，在有利信道下可提供1 dB以内的精度。
This letter investigates performance enhancement by the concept of multi-carrier index keying in orthogonal frequency division multiplexing (OFDM) systems. For the performance evaluation, a tight closed-form approximation of the bit error rate (BER) is derived introducing the expression for the number of bit errors occurring in both the index domain and the complex domain, in the presence of both imperfect and perfect detection of active multi-carrier indices. The accuracy of the derived BER results for various cases are validated using simulations, which can provide accuracy within 1 dB at favorable channels.