Title :
Measured Data Rate from Adaptive Modulation in Wideband OFDM Systems
Author :
Edalat, Farinaz ; Tan, Jit Ken ; Nguyen, Khoa M. ; Matalon, Nir ; Sodini, Charles G.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Massachusetts Inst. of Technol., Cambridge, MA
Abstract :
Adaptive modulation is implemented on a wideband OFDM transceiver prototype to quantify its performance in indoor wireless environment. Our measurements indicate that over a bandwidth of 100 MHz, the channel varies quite significantly. With a target uncoded bit error rate of 10 -3, it is found that at link distances of 1.0 to 10.8 meters, the data rate varies from 395 Mbps to 76 Mbps. The measured adaptive average data rate is 2.88 times the average data rate without adaptive modulation. Furthermore, the adaptive modulation is 8.9% of the entire transceiver modem which means it is of low complexity
Keywords :
OFDM modulation; adaptive modulation; broadband networks; error statistics; indoor radio; transceivers; 1.0 to 10.8 m; 100 MHz; adaptive modulation; bit error rate; indoor wireless environment; orthogonal frequency division multiplexing; wideband OFDM transceiver prototype; Bandwidth; Bit error rate; Delay; Frequency diversity; Modems; OFDM modulation; Prototypes; Radio frequency; Transceivers; Wideband;
Conference_Titel :
Ultra-Wideband, The 2006 IEEE 2006 International Conference on
Conference_Location :
Waltham, MA
Print_ISBN :
1-4244-0101-1
Electronic_ISBN :
1-4244-0102-X
DOI :
10.1109/ICU.2006.281539
