"#$%$"&'''"&()*+(,)-.(,/"&(0)+12*(),)-.(",(3"4*,01+*2*()"5*67 !"#$%&d1-+b&15&e/+4631+9& & !"#$%&'()(&$468./6-:&;+1,+-2&%122/3344 Measuring the Influence of Tx Antenna Spacing and Transmit Power on the Closed-loop Throughput of Ieee 802.16-2004 Wimax
نویسندگان
چکیده
The impact of transmit-antenna spacing and signal-to-noiseratio on channel capacity has been measured intensively in a variety of scenarios. When looking at the physical layer throughput of a multiantenna communication system, the behavior over antenna spacing may look completely different, leading to other conclusions regarding the optimal antenna distance. In this paper, we compare —by testbed measurements— the closedloop throughput of a standard compliant 2×2 IEEE 802.16-2004 WiMAX radio link with the unconstrained capacity and the mutual information of the channel. Results are presented for base-station antenna spacings of 0wavelengths (cross polarization) as well as spacings between 0.6wavelengths and 7.7 wavelengths (equal polarization).
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