This paper presents a downlink performance analysis of a link adaptation (LA) algorithm applied to a MIMO-OFDM Physical Layer (PHY) which is a popular candidate for future generation cellular communication systems. The new LA algorithm attempts to maximize throughput and adaptation between various modulation and coding schemes in combination with both space-time block codes (STBC) and spatial multiplexing (SM) is based on knowledge of SNR and H matrix determinant; the parameters which are found to have the most significant influences on the system throughput. By means of ray-tracing software, a detailed example coherent time-variant channel trace is generated. Subsequent application of physical layer simulation software to this channel trace yields throughput results for adaptive MIMO-OFDM for the cases of the proposed LA algorithm, an algorithm based on SNR only, an algorithm based on SNR and H matrix determinant with fixed threshold levels for different SM modes and the optimal case.
|Translated title of the contribution||Link adaptation performance evaluation for a MIMO-OFDM physical layer in a realistic outdoor environment|
|Title of host publication||IEEE 64th Vehicular Technology Conference, (VTC-Fall 2006), Montreal, Canada|
|Publisher||Institute of Electrical and Electronics Engineers (IEEE)|
|Pages||1 - 5|
|Number of pages||5|
|Publication status||Published - Sep 2006|
|Event||64th Vehicular Technology Conference 2006 (VTC 2006-Fall) - Montreal, Canada|
Duration: 1 Sep 2006 → …
|Conference||64th Vehicular Technology Conference 2006 (VTC 2006-Fall)|
|Period||1/09/06 → …|
Bibliographical noteConference Proceedings/Title of Journal: IEEE 64th Vehicular Technology Conference, VTC-Fall 2006
Conference Organiser: IEEE
Rose publication type: Conference contribution
Sponsorship: The authors wish to acknowledge the financial support of Dorothy Hodgkin Postgraduate Awards (DHPA) and Toshiba
Research Europe Limited (TREL) and to thank Dr. Yong Sun and Dr. Magnus Sandell of TREL for their technical input.