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Comparison of DCT and Wavelet Based OFDM System Working in 60 GHz Band

机译：DCT和基于小波的OFDM系统在60 GHz频段工作的比较

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At the 60 GHz band a massive amount of spectral space (5 GHz) has been allocated unlicensed worldwide for dense wireless local communications. OFDM has gained much popularity in the field of wireless communication because of its ability to transfer the data at higher rate, high bandwidth efficiency and robustness to multipath and delay.The BER performance of conventional FFT-OFDM system is compared with DWT-OFDM system and DCT-OFDM system in an AWGN environment and Saleh-Valenzuela (SV) channel model at 60 GHz. Several wavelets such as Haar, Daubechies, Symlet, biorthogonal are considered. The BER is calculated for signaling format BPSK and the performance is analyzed at 60 GHz.Simulation results show that DCT based scheme yields the lowest average bit error rate. While out of all wavelet mother used Haar and Daubechies wavelet based scheme yields lower BER than FFT-OFDM for an AWGN channel. Whereas SV channel model working at 60 GHz FFT-OFDM performs best amongst the three.
机译：在60 GHz频段，大量频谱空间（5 GHz）已在全球范围内未经许可分配用于密集的无线本地通信。由于OFDM能够以更高的速率传输数据，高带宽效率以及对多径和时延的鲁棒性，因此在无线通信领域获得了广泛普及。将传统FFT-OFDM系统的BER性能与DWT-OFDM系统进行了比较， AWGN环境中的DCT-OFDM系统和Saleh-Valenzuela（SV）信道模型在60 GHz。考虑了几个小波，例如Haar，Daubechies，Symlet，双正交。计算了BERSK信令格式的BER，并在60 GHz下对性能进行了分析。仿真结果表明，基于DCT的方案产生最低的平均误码率。在所有使用小波的母亲中，基于Haar和Daubechies的小波方案对于AWGN信道产生的BER低于FFT-OFDM。而在60 GHz FFT-OFDM下工作的SV信道模型在这三个模型中表现最佳。

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