Incremental rate maximisation power loading with BER improvements

Waleed Al-Hanafy, Mohamed Nuri Hussin, S. Weiss

Research output: Contribution to conferencePaperpeer-review

2 Citations (Scopus)
153 Downloads (Pure)


This paper aims to maximise the rate over a MIMO link using incremental power and bit allocation. Two different schemes, greedy power allocation (GPA) and greedy bit allocation (GBA), are addressed and compared with the standard uniform power allocation (UPA). The design is constrained by the target BER, the total power budget, and fixed discrete modulation orders. We demonstrate through simulations that GPA outperforms GBA in terms of throughput and power conservation,while GBA is advantageouswhen a lower BER is beneficial. Once the design constraints are satisfied, remaining power is utilised in two possible ways, leading to improved performance of GPA and UPA algorithms. This redistribution is analysed for fairness in BER performance across all active subchannels using a bisection method.
Original languageEnglish
Number of pages5
Publication statusPublished - 23 Aug 2010
EventThe 18th European Signal Processing Conference (EUSIPCO-2010) - Aalborg, Denmark
Duration: 23 Aug 201027 Aug 2010


ConferenceThe 18th European Signal Processing Conference (EUSIPCO-2010)
CityAalborg, Denmark


  • incremental rate
  • power loading
  • BER
  • signal processing


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