{"id":"W2149249871","doi":"10.1109/t-wc.2008.070637","title":"Do We Really Need OSTBCs for Free-Space Optical Communication with Direct Detection?","year":2008,"lang":"en","type":"article","venue":"IEEE Transactions on Wireless Communications","topic":"Optical Wireless Communication Technologies","field":"Engineering","cited_by":196,"is_retracted":false,"has_abstract":true,"ca_institutions":"University of Waterloo","funders":"","keywords":"Fading; Free-space optical communication; Block code; Computer science; Antenna diversity; Bit error rate; Optical communication; Block (permutation group theory); Modulation (music); Telecommunications; Spatial modulation; Maximal-ratio combining; Statistics; Algorithm; Optics; Mathematics; Channel (broadcasting); MIMO; Physics; Wireless; Decoding methods; Combinatorics","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.001452691,0.0004785518,0.0009782638,0.0002317805,0.0005220464,0.001110987,0.0007750312,0.001958195,0.00329726],"category_scores_gemma":[0.00929634,0.0002955333,0.000326232,0.0003397483,0.001361954,0.004398254,0.0008701377,0.001239815,0.00126633],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.000452387,"about_ca_system_score_gemma":0.0006102185,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.0006443282,"about_ca_topic_score_gemma":0.0009222412,"domain_scores_codex":[0.9990834,0.0002790606,0.00002898268,0.00008854173,0.0003644292,0.0001556002],"domain_scores_gemma":[0.9948908,0.003229629,0.0003689015,0.0005800907,0.0007645523,0.0001661137],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"theoretical_or_conceptual","study_design_gemma":"simulation_or_modeling","study_design_scores_codex":[0.0005989322,0.000206629,0.004498477,0.0009867623,0.0001438756,0.0004097209,0.0004298275,0.04617282,0.04801459,0.4859948,0.008799297,0.4037442],"study_design_scores_gemma":[0.0002566513,0.001493203,0.002985678,0.0004435633,0.0001645502,0.002428614,0.0009329295,0.3565691,0.04131907,0.5310472,0.06216032,0.0001992151],"study_design_candidate":"simulation_or_modeling","study_design_consensus":null,"genre_codex":"methods","genre_gemma":"empirical","genre_scores_codex":[0.2516605,0.02382792,0.6436914,0.04202103,0.001674688,0.0001336526,0.0001315701,0.0005518604,0.0363074],"genre_scores_gemma":[0.8500717,0.007219112,0.1317509,0.003466041,0.001383081,0.0001127692,0.00007612249,0.00007908522,0.005841103],"genre_candidate":"empirical","genre_consensus":null,"teacher_disagreement_score":0.00329726,"threshold_uncertainty_score":0.01103044,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.02488800074024149,"score_gpt":0.2465338545166197,"score_spread":0.2216458537763782,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}