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Trends in Network and Communications

Volume 197 of the series Communications in Computer and Information Science pp 378-387

A Novel VLSI Implementation of K-Best LSD for 3GPP LTE

  • K. KalyaniAffiliated withDepartment of Electronics and Communication Engineering, Thiagarajar College of Engineering
  • , R. RaghuramAffiliated withDepartment of Electronics and Communication Engineering, Thiagarajar College of Engineering
  • , V. RaghunandhanAffiliated withDepartment of Electronics and Communication Engineering, Thiagarajar College of Engineering
  • , S. RajaramAffiliated withDepartment of Electronics and Communication Engineering, Thiagarajar College of Engineering

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Abstract

In this paper, Distributed Arithmetic (DA) based K-best List Sphere Detector (LSD) for a 3GPP Long Term Evolution (LTE) receiver is proposed. The K-best LSD block implemented with the use of DA, reduces the size of the parallel hardware multiply-accumulate. These DA based blocks are compared with conventional multiplier based blocks and found that the proposed design has an improvement in terms of area. This design has minimal hardware and computational complexity to meet the requirements of LTE standard. The VHDL coding for K-best LSD using DA for LTE is downloaded onto Xilinx xc3s100e-4vq100 and results were verified.

Keywords

Multiple-Input Multiple-Output (MIMO) - Orthogonal Frequency-Division Multiplexing (OFDM) 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) sphere detector(SD) list sphere detector(LSD) Distributed Arithmetic(DA)