Resource Allocation in Downlink of Dual-hop OFDM Relaying Systems

Publish Year: 1390
نوع سند: مقاله کنفرانسی
زبان: English
View: 1,027

This Paper With 5 Page And PDF Format Ready To Download

  • Certificate
  • من نویسنده این مقاله هستم

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این Paper:

شناسه ملی سند علمی:

ICEE19_407

تاریخ نمایه سازی: 14 مرداد 1391

Abstract:

In this paper, the main objective is to maximize the spectral efficiency in the downlink of dual-hop Orthogonal Frequency Division Multiplexing (OFDM) relaying systems. We propose an algorithm which jointly allocates transmission power and transmission interval in a system consisting of a source, multiple relays and a destination which utilizes Decode-and- Forwarded (DF) relaying. Two different sets of constraints are considered in this algorithm. In the first one, base and relay stationshave independent power constraints while in the second one, there is a total power constraint. The algorithm is then extended to the case of multiple users where in addition to power and time, subcarrier allocation is also conducted. Numerical results are also provided which verify the performance improvement by adopting of the proposed algorithms

Authors

Elham Pazouki

Wireless Innovation Laboratory Department of Electrical and Computer Engineering Tarbiat Modares University, Tehran, Iran