This paper presents a set of rigorous and comprehensive coverage and throughput studies for enhanced high-capacity Multi-Input Multi-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) systems. A ray-tracing propagation model has been used to produce site-specific MIMO channel data. Site-specific throughputs are then predicted in a city centre environment for a range of different physical layer configurations. Dynamic Transmit Power Control (TPC) is applied to lower transmit power and thus reduce interference. Results demonstrate the need for suitable link adaptation strategies under a wide range of channel conditions. Spatial Multiplexing (SM) is shown to struggle in regions close to the basestation, or for locations with low SNR. We conclude that it is vital to reconfigure parameters on a case by case basis. When a suitable space-time algorithm is combined with Adaptive Modulation and Coding (AMC) and the appropriate number of antenna elements, high peak throughputs and good geographic coverage become realistic for wireless applications in a dense urban environment.
|Translated title of the contribution||High throughput MIMO-OFDM WLAN for urban hotspots|
|Title of host publication||Vehicular Technology Conference 2005 (VTC 2005-Fall), Dallas|
|Publisher||Institute of Electrical and Electronics Engineers (IEEE)|
|Pages||296 - 300|
|Number of pages||4|
|Publication status||Published - Nov 2005|
|Event||62nd Vehicular Technology Conference 2005 (VTC 2005-Fall) - Dallas, United States|
Duration: 1 Nov 2005 → …
|Conference||62nd Vehicular Technology Conference 2005 (VTC 2005-Fall)|
|Period||1/11/05 → …|
Bibliographical noteConference Proceedings/Title of Journal: IEEE 62nd Vehicular Technology Conference, 2005 (VTC 2005-Fall)
Rose publication type: Conference contribution
Sponsorship: This work has been funded by the Toshiba Telecommunications Research Laboratory (TRL), Bristol, UK.
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- Link adaptation
- Power control
- Space time block codes