Title :
A design and performance analysis of OFDMA modulator based on IEEE 802.16a standard
Author :
Park, HyeongSook ; Park, YounOk ; Kim, Cheol-Sung
Author_Institution :
Wireless Packet Modem Res. Team, Electron. & Telecommun. Res. Inst., Taejeon, South Korea
Abstract :
This paper presents the implementation and performance of the OFDMA modulator based on the IEEE 802.16a standard. We present the bit-word length for subblocks of modulator to support the acceptable performance and lower complexity. To show the signal quality of transmit signal, the error vector magnitude (EVM) of designed modulator is simulated under ideal demodulation process. We also analyze the peak average power ratio (PAPR) characteristics of transmitted signal, which is almost same for any modulation schemes and the number of subchannels, but the probability distribution of transmitted signal varies depending on the number of subchannels.
Keywords :
FIR filters; IEEE standards; OFDM modulation; broadband networks; demodulation; frequency division multiple access; metropolitan area networks; probability; radio access networks; telecommunication standards; EVM; IEEE 802.16a standard; OFDMA modulator; bit-word length; demodulation process; error vector magnitude; orthogonal frequency division multiple access; performance analysis; probability distribution; quality signal transmission; subblock modulator; subchannel; Demodulation; Finite impulse response filter; Hardware; Modems; OFDM modulation; Peak to average power ratio; Performance analysis; Signal design; Signal processing; Testing;
Conference_Titel :
Signals, Systems and Computers, 2004. Conference Record of the Thirty-Eighth Asilomar Conference on
Print_ISBN :
0-7803-8622-1
DOI :
10.1109/ACSSC.2004.1399190
