An Efficient Circulant MIMO Equalizer for CDMA Downlink: Algorithm and VLSI Architecture
نویسندگان
چکیده
منابع مشابه
An Efficient Circulant MIMO Equalizer for CDMA Downlink: Algorithm and VLSI Architecture
In this paper, we present an efficient circulant approximation based MIMO equalizer architecture for the CDMA downlink. This reduces the Direct-Matrix-Inverse (DMI) of size (NF × NF ) with O((NF )3) complexity to some FFT operations with O(NF log2(F )) complexity and the inverse of some (N × N) sub-matrices. We then propose parallel and pipelined VLSI architectures with Hermitian optimization a...
متن کاملDisplacement Mimo Kalman Equalizer Architecture for Cdma Downlink in Fast Fading Channels
In this paper, we explore the displacement structure in a Kalman equalizer for MIMO-CDMA downlink. A streamlined MIMO Kalman equalizer architecture is proposed to extract the commonality in the data path by exploiting the displacement structure of the transition matrix and the block-Toeplitz structure of the channel matrix. Numerical matrix multiplications withO(F ) complexity are eliminated by...
متن کاملAn Efficient VLSI Architecture for CORDIC Algorithm
The proposed architecture carried out makes use of n iterations to produce the final value of the function upto an accuracy of n bits. A two’s complement 4bit carry-look ahead adder/subtractor block with carry-save has been implemented as part of the architecture for greater speed. An 8-bit barrel shifter has been implemented for use in the algorithm. An optimum use of edge-triggered latches an...
متن کاملEnergy Efficient VLSI Architecture for Linear Turbo Equalizer
In this paper, energy efficient VLSI architectures for linear turbo equalization are studied. Linear turbo equalizers exhibit dramatic bit error rate (BER) improvement over conventional equalizers by enabling a form of joint equalization and decoding in which soft information is iteratively exchanged between the equalizer and decoder. However, turbo equalizers can be computationally complex and...
متن کاملChip Level Decision Feedback Equalizer for CDMA Downlink Channel
In most commercial wideband code division multiple access (W-CDMA) systems, the transmitted signal in the downlink channel is spread by orthogonal codes to accommodate different users. However, frequency selective fading destroys the orthogonality and causes multiple access interference (MAI). The rake receiver has been proposed for a receiver in the downlink channel. Although providing reasona...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: EURASIP Journal on Advances in Signal Processing
سال: 2006
ISSN: 1687-6172,1687-6180
DOI: 10.1155/asp/2006/57134