{'fraction_non_alphanumeric': 0.022672064777327937, 'fraction_numerical': 0.0, 'mean_word_length': 5.828729281767956, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Cross-layer MIMO-link exploiting packet re-routing mechanisms and adaptive modulation in diverse channel condition

This paper considers a cross-layer adaptive modulation switching concept for TCP-enabled MIMO wireless communication systems implementing a packet re-routing mechanism over physically decomposed sub-channels. We demonstrate that combining both adaptive modulation and packet re-routing mechanisms improve overall performance over MIMO sub-channels that posses unbalanced or uneven time-varying error rate characteristics. A simulated wireless communications system employs and evaluates packet re-routing techniques over four sub-channel connections made available to the link layer. It then considers the effect of cross-layer directed link modulation adaptation switching for point-to-point wireless communications. We investigate the system in the light of goodput under various channel differences and characteristics, including data rate and bit error rate (BER). For each developed scenario, a separate analysis and discussion is presented. Based on the investigation results, we demonstrate that even simple re-routing and adaptive modulation mechanisms may be beneficial for systems utilising multiple antennas.