| In this paper, a novel noncoherent linear equalization scheme is introduced and analyzed. The proposed scheme is not only applicable for M{ ary di erential phase{shift keying (MDPSK) but also for M{ary di erential amplitude/phase{shift keying (MDAPSK) and minimizes the variance of intersymbol interference (ISI) in the equalizer output signal. The optimum equalizer coeÆcients may be calculated...

In this paper, modulation diversity (MD) for Rayleigh fading intersymbol interference (ISI) channels is proposed. In particular, the achievable performance with MD is analyzed and a design criterion for MD codes is deduced from an upper bound on the pairwise error probability. This design rule is similar to the well–known design rule for MD codes for flat fading and does not depend on the power...

The deliberate introduction of controlled intersymbol interference (ISI) in Tukey signalling enables the recovery signal amplitude and (in part) phase under direct detection, giving rise to significant data rate improvements compared intensity modulation with detection (IMDD). use an integrate-and-dump detector makes precise waveform shaping unnecessary, thereby equipping scheme a high degree r...

Setup Introduction A. Challenges in High Speed Serial Link Design B. Signal Restoration using a Decision Feedback Equalizer (DFE) Preliminaries A. Opening Sue2 Schematics B. Running CppSim Simulations Plotting Time-Domain Results A. Output signal plots B. Output signal Eye Diagrams C. RMS Jitter Examining Non-Idealities A. Intersymbol Interference (ISI) B. Reflections C. Non-Linearity and Offse...

It has long been known [1] that the performance of a channel with intersymbol interference (ISI) not only depends on the signal to noise ratio, but on the actual impulse response coefficients as well. In this paper, a technique for approximating the performance of a communications channel in the presence of ISI is presented. It is assumed that the finite length impulse response of the channel i...

Partial-response (PR) signaling is used to model communications channels with intersymbol interference (ISI) such as the magnetic-recording channel and the copper-wire channel for digital subscriber lines. Coding for improving noise immunity in higher order partial-response channels, such as the “extended” class-4 channels denoted EPR4, EPR4, EPR4, has become an important subject as the linear ...

In 1972, Forney proposed a maximum likelihood sequence estimator for digital PAM (pulse amplitude modulated) signals in the presence of nite intersymbol interference (ISI) and additive white Gaussian noise. This optimum scheme involves passing the received signal through a so-called whitened linear matched lter, sampling the lter output at the symbol rate, and processing the resulting sequence ...

Several widely linear equalization algorithms utilizing the rotationally variant nature of the received signals are presented in this paper to combat the detrimental effect of intersymbol interference (ISI) introduced by frequency selective channels. Their adaptive implementations and application to the timereversal space-time coded (TR-STBC) system are also considered. In addition, a widely li...

– Equalization in the time domain is a wellknown technique for combating intersymbol interference (ISI) in frequency selective channels. In this paper we derive the general structure of the linear zero forcing (ZF) equalizing filters for multiple input multiple output (MIMO) communication systems with more outputs than inputs. These filters are finite impulse response (FIR) filters in general a...

In this paper, an approximation for the bit error rate (BER) of maximum–likelihood (ML) detection is calculated for complementary code keying (CCK) modulated wireless local area network (WLAN) transmission using time– reversal space–time block codes (TR–STBCs) and maximum ratio receive combining (MRRC). Multiple–input multiple–output (MIMO) Ricean fading intersymbol interference (ISI) channels ...